Commit Graph
130 Commits
Author SHA1 Message Date
mckero b1dce9c518 fix(wavelog): the upload count included QSOs sent days ago
Two smaller findings from the same audit.

Entries already confirmed by the server were added to the success total, so re-running an
upload reported "N uploaded" counting contacts that went up days ago. They are skipped and
no longer counted.

A bulk reply that stored nothing read as an acceptance. `{"imported":0}` has a success
status and would have cleared the queue. The count is checked now. Look4Sat posts one QSO
per request so this was latent, but it would have become real the moment that changed.

The count check deliberately looks only at `imported` and `adif_count`, never
`adif_errors`: v1 answers a successful upload with `adif_errors:0` beside `adif_count:1`,
and matching the wrong key would have rejected every stored QSO. A probe confirms the six
relevant shapes classify correctly.
2026-08-26 02:22:00 +00:00
mckero 13c5fc9584 fix(wavelog): the response reader lost contacts three more ways
An audit cloned the Wavelog server and read the QSO endpoints rather than the
documentation. The previous commit had transcribed the wrong endpoint - `success`,
`successful` and `dupe` come from create_station; the QSO path answers `created` on
success and `abort` with a 400 when a record in a batch failed. Three defects followed,
and the worst reintroduced the very failure the class was written to prevent.

Matching the bare word "duplicate" anywhere in the body classified a hard rejection as a
duplicate, which maps to success and drops the QSO from the queue. This is not
hypothetical: the server's own rejection text is "Duplicate for <call>", built in
Logbook_model::import, and Api_v2 puts strip_tags'd copies of those messages into
validation_error bodies. Probed against real response bodies, five of ten lost the
contact. Only the status field counts now, or a 409.

An HTML body was accepted. A reverse proxy, a maintenance page or a PHP fatal answers 200
with HTML and no status token, so it fell through to Accepted and a misconfigured proxy
ate contacts silently. A body starting with `<` is Unreadable, which keeps the QSO queued.

A rejection from v2 stopped the upload. v2 refuses a legacy v1 key with 401 invalid_token
- the app sends the v1 key as a Bearer token, and Api_v2::authenticate requires a wl2_
prefix - so a v1-only operator could not upload at all. That was a regression against the
pre-fix code, which fell through on any non-2xx. Both v2 and the first v1 endpoint now
always fall through; only the last one is final, and the failure message carries the most
specific reason any endpoint gave plus all three status codes. The third was previously
dropped from that message.

Also: the v2 error envelope has no status key at all, so `"error":` is now recognised on
its own.
2026-08-26 02:11:55 +00:00
mckero 4567f46867 fix(wavelog): a 200 is not an acceptance
WaveLogApi decided an upload had succeeded from the HTTP status alone. Wavelog validates
after responding, so a rejected QSO comes back as 200 with `{"status":"failed","reason":
"..."}` - and the uploader then called markUploaded and dropped it from the queue. The
contact was lost and the operator was told the upload succeeded.

Response shapes are transcribed from the Wavelog API reference, not guessed: success is
`status: success` or `successful`, a duplicate is `status: dupe` with a 200, failures are
`status: failed` with `reason` or `status: error` with `message`.

WavelogResponse reads the body. Four outcomes: accepted and duplicate both clear the
queue entry, because the log holds the QSO either way; rejected keeps it and surfaces the
server's own explanation; and a status field we cannot recognise also keeps it, since
costing a retry beats losing a contact. Parsed as text rather than with JSONObject because
org.json is compileOnly in core:domain and a JVM test would otherwise assert against a
stub. Whitespace around separators is collapsed before matching - a first attempt listed
spacings and missed `{ "status" : "failed" }`, which a probe caught.

Two other things in the same area.

The ten-minute auto-upload loop is gone. It retried the queue in the background with no
way to tell the operator anything: a grid mismatch was swallowed by an empty if block and
every other failure retried silently forever. A QSO that cannot be uploaded now waits for
a manual upload from settings, where the result is actually shown.

The upload path no longer builds user-facing text in Kotlin. UploadOutcome carried a
pre-formatted Chinese string, so the message ignored the device language whatever the
locale files said. It now reports a Reason the view model maps to resources, which needed
a format-argument overload on IShowToast to get a count into a localised message.
2026-08-26 01:20:26 +00:00
mckero fe6d0af8b7 fix: two regressions this rebuild introduced for non-APRS users
Both found by an auditor comparing behaviour against the released build rather than
against the intent of the change.

Prefix-first portable callsigns were rejected. CallsignEntry took the first segment -
`call.substringBefore('/')` - and required a letter and a digit in it. A portable call can
be written prefix-first, DL/W1AW or ZL/JA1ABC or OH/W1AW/MM, where the leading token is a
country prefix with no digit at all. Measured: five such forms were refused where the old
length-only check had accepted them. Any segment may now carry the callsign.

JSON cookie exports stopped working for QRZ. QrzGridParser.cookieHeader converts the JSON
array a browser extension produces into a Cookie header, and it had zero production
callers - the raw pasted text went straight into the header. The old client normalised it.
So an operator whose export had been working would see their cookie sent as a literal JSON
blob, QRZ would serve its signed-out page, and the app would tell them the cookie had
expired when it was perfectly good. A raw `k=v; k=v` paste was unaffected, which is why
this survived review.

Both are cases where a rewrite lost behaviour the old code had. Neither had a test.
2026-08-26 00:21:11 +00:00
mckero 6859c825d7 fix(aprs): treat any unrecognised login response as a refusal
The previous commit listed the refusal wordings it knew - "invalid login" and "login
denied" - and skipped everything else as chatter. That list was incomplete. Probing the
parser against responses captured from live servers found three it missed:

    # Login by user not allowed     observed on rotate.aprs2.net
    # Port full
    # Server full

Each was skipped as a keepalive, so the login timed out into Unknown, Unknown is
deliberately read as "may be working", and every send afterwards reported success to an
operator the server had refused. Exactly the failure the previous commit fixed, reached
by a different wording.

Inverted: identification and keepalive comments are recognised positively, and anything
else the server says during login counts as an objection. The trade is that an unforeseen
harmless comment would read as a refusal - but that errs towards reporting failure rather
than claiming success, which is the direction this feature has been wrong in throughout.

The keepalive prefixes come from a live capture rather than guesswork. aprsc repeats its
own identification with a timestamp every twenty seconds:

    # aprsc 2.1.21-gbfc2090 25 Aug 2026 16:41:07 GMT T2UK 195.201.15.71:14580

Two tests had invented a `# Tue Aug 25 ...` date line and a `# keepalive N`, neither of
which any server sends. Both now use the captured format.

Also here: the QRZ cookie test in settings goes through the repository instead of
scraping from the UI. It was the last caller of QrzGridClient, which is deleted, and it
built its result from hardcoded Chinese strings inside the composable - those move to
resources, and the four outcomes are now distinguished, where before an expired cookie
and a station with no grid on file produced the same message.
2026-08-25 17:06:37 +00:00
mckero 321cd8f2fa fix(aprs): the login line was malformed, and the refusal was invisible
An auditor ran the plan's own release gate against live APRS-IS servers. It failed at
the login step, on every server tried:

    sent: user N0CALL pass -1 vers Look4Sat-4.5.4
    got:  # Invalid login: software name and version are not separated by a space

Reproduced on euro.aprs2.net and noam.aprs2.net, aprsc 2.1.21. `vers` takes TWO tokens,
a software name and a version. An earlier commit read the rule "softwarename must not
contain a space" as "the field must be one token" and hyphenated the space between them
- and the unit test asserted that as correct, so the mistake was frozen in place.

Worse than the malformed line was what happened next. `# Invalid login:` is a comment
but not a logresp, so parse skipped it as keepalive chatter; the login then timed out
into Unknown, which is deliberately treated as "may be working"; so `ok = sent &&
!refused` was true and the operator was shown "APRS: report sent OK" for a login the
server had refused. That is v4.6.0's defining defect - every send reported successful
regardless of outcome - still live on the exact path every operator takes. The rebuild
narrowed it rather than closing it.

Both halves are fixed: the name and version stay separate tokens with whitespace
collapsed within each, and a refusal comment is classified as a refusal before the
logresp test. A socket test now replays the server's actual bytes.

Three smaller things from the same review:

The foreground service type goes back to dataSync. The previous commit chose location
to escape dataSync's six-hour cap, but a location-typed service is refused outright
unless a location runtime permission has already been granted, and the settings card
requests only notifications - so it would have failed silently for anyone who declined
location access. The cap that prompted the switch applies only when targetSdk is 35 or
higher, which this project does not declare. A test now reads the manifest and the
service source and fails if they disagree, which is the only way this class of defect
is visible from a JVM test.

The version string in the login was 4.5.4 while the app was 4.6.0. Now split into name
and version and corrected, though it is still hardcoded - core:data has no BuildConfig,
so passing it in properly is a separate change.

The passcode hint said "empty = auto-computed from callsign" in all five locales. The
app stopped doing that two commits ago; it now connects receive-only, and the hint says
so. It was the first thing an operator read next to the field, promising the behaviour
that was deliberately removed.

Not fixed, and known: the notification body is rebuilt from the previous cycle's state
so it can show a stale verdict, a deliberate receive-only choice is still styled as an
error, and no last-success timestamp exists - so an operator still cannot establish
whether their station has ever reached the network.
2026-08-25 16:04:47 +00:00
mckero 0208a577c4 fix(aprs): do not tell a mistyped passcode it is in receive-only mode
The previous commit derived "wants receive-only" from AprsPasscode.canTransmit, which is
a boolean over four cases. Both a deliberate -1 and a mistyped passcode return false, so
fixing the mis-diagnosis in one direction introduced it in the other: measured against
the shipped algorithm, three entries - a passcode off by one digit, an arbitrary number,
and a non-numeric entry - were all told they were connected in receive-only mode, when
what they needed to hear was that the passcode does not match the callsign.

classify already distinguishes these; only its ReceiveOnly case counts as a deliberate
choice. A test now pins the distinction, including the fact that all four entries are
equally unable to transmit - which is exactly why the boolean was not enough.

Found by probe before review, not by the suite, which had no test for the reporter's use
of this and still does not.
2026-08-25 15:25:32 +00:00
mckero eb66a77cae refactor(qrz): move the grid lookup out of the composable
LogTab read the QRZ cookie straight out of SharedPreferences through LocalContext,
inside composition, on every submission - disk access in a composable, around the
repository layer, with the client referenced by fully-qualified name inline. And it
did `if (grid != null)`, so a lookup that failed for any reason left the QSO without
a grid and told the operator nothing.

IQrzGridLookup lives in core:domain, QrzGridLookup in core:data owns the cookie read,
and the view model exposes lookupGrid. The composable now takes a callback and handles
each outcome: a locator is attached, no locator on file passes quietly because nothing
is wrong, an expired cookie says to paste a fresh one, and an unreachable QRZ says so.
That is what the four-outcome QrzGrid type from ce68f487 was for - until now nothing
consumed it and the old nullable client was still the one being called.

Note for anyone extending RadarScreen: the local holding the view model cannot be
referenced as `viewModel` inside a lambda, because that name also resolves to the
composable factory function. Hence the explicitly typed local.

The old QrzGridClient is now unused here but left in place; removing it belongs with
the settings screen, which still calls it to validate a pasted cookie.
2026-08-25 15:18:40 +00:00
mckero e0900778f0 fix(log): say why a callsign was not logged instead of dropping it
`submit()` opened with `if (call.length < 3) return`. During a pass the operator typed
a callsign, pressed done, and nothing happened - no entry, no message, no way to tell
the app had decided against them. None of the logging software surveyed for this work
- N1MM+, DXLog, PoLo, HAMRS - discards a submission silently.

Validation is deliberately loose, because strictness costs more than it saves. Checked
against 28 real callsigns, a typical strict pattern rejects 16 of them: W1AW/4, 2E0ABC,
9A1CCY and SV2ASP/A among others. A pattern permissive enough to accept those also
accepts a Maidenhead locator as a callsign. There is no regex that catches typos without
throwing away legitimate calls, so CallsignEntry rejects only what cannot be a callsign
- empty, one character, illegal characters, all digits, all letters - and reports doubt
as a warning that still logs the contact.

Two warnings exist. A six-character grid-shaped entry says so, because grid and callsign
are exchanged together on FM satellites and the fields sit side by side. A station already
worked this pass says so too, without blocking: the same station on a later pass is a
legitimate new contact, and contest loggers default to working duplicates - DXLog
describes refusing them as an outdated habit.

That warning also replaces the duplicate suppression, which was a 300ms window comparing
the last callsign, admitted in its own comment to be a workaround. It could silently
discard a real second contact, and a set of calls worked this pass is both honest and
more useful. It survives configuration changes via rememberSaveable.

Not addressed here: the QRZ grid backfill still reads the cookie out of SharedPreferences
from inside a composable through LocalContext, and still reports nothing when a lookup
fails. IQrzGridLookup is added for that, but wiring it needs the container, the view model
and the UI to change together.
2026-08-25 14:32:42 +00:00
mckero 2ff8643988 fix(aprs): build a legal packet, and keep beaconing when the screen locks
The position line was one string template, and it broke four rules at once.

No path. The specification says a client-originated packet carries TCPIP* in the
path, "nothing more or less", and there was none - `CALL>APRS:=...` went out bare.

No position meant 0,0. When the station QTH was unset and no GPS fix was available,
`lat ?: 0.0` put the operator at 0 degrees north, 0 degrees east - a point in the
Gulf of Guinea - on the global network, under their own callsign. There is no honest
default for "nowhere", so AprsBeacon refuses instead and the reporter says why. A
genuine 0,0 fix is still legal and still sent; the refusal is about absence.

No comment sanitising. A line break typed into the status field ended the packet and
started a second one from the remaining text, which an operator could trigger by
pressing return. Measured: the old builder emitted two lines from one call, the second
impersonating whatever callsign the text contained. Only printable ASCII survives now.

No length cap. A 600-character status produced a 636-byte line against a 512-byte
limit including CRLF. The comment is trimmed to whatever room is left after the
header and the coordinates, bounded also by the format's own 43-character limit.

Symbol handling was whatever character the operator typed first, including one that
breaks the fixed-width parse. It now accepts only what the specification allows -
the two table selectors and overlay characters - and falls back to the primary table.
aprs.fi names symbol misconfiguration as the most common reason a station never
appears on the map, so this is not cosmetic.

Separately, beaconing stopped whenever the screen locked. The interval was a coroutine
delay inside the reporter, and Doze suspends network access and ignores wake locks even
for a foreground service: the timer fired on schedule and then could not reach the
network, while the notification went on claiming the service was running. The service
now books each beacon with setExactAndAllowWhileIdle, which is the only scheduling that
survives Doze, and reschedules after each tick so a changed interval applies at once.
If the operator has revoked exact alarms it falls back to an inexact one, which beacons
late rather than not at all.

The foreground service type changes from dataSync to location. dataSync is capped at
six hours in any 24-hour window on recent Android and then stopped by the system, which
would silently end a beacon meant to run all day; the service reads the station position
and falls back to GPS, so location describes what it actually does.

The interval floor becomes five minutes rather than one. This station is fixed or
walking, and APRS-IS etiquette is to beacon no more often than the position changes.

The packet builder moves to core:domain as pure logic, so all of this is testable
without a socket - including that a comma-decimal locale cannot corrupt the coordinates,
which nothing covered before.
2026-08-25 14:17:23 +00:00
mckero 262ae45432 fix(aprs): stop inventing a transmit passcode, and let the report notices appear
AprsReporter derived a passcode from the callsign whenever the operator's entry was
unusable:

    passcode = cfg.passcode.toIntOrNull()?.takeIf { it >= 0 } ?: AprsPacket.passcode(cfg.callsign)

Measured against the shipped algorithm for BG7NTA, whose passcode is 21162, four
inputs produced a transmit passcode the operator never obtained: blank, whitespace,
non-numeric, and an explicit -1. That last one is the documented receive-only value,
so `takeIf { it >= 0 }` also made receive-only unreachable - and a receive-only login
is the one way to confirm a setup works without putting anything on the network,
which is exactly how this feature was supposed to be validated before release.

This is a policy question more than a bug. APRS-IS states that supplying the correct
passcode to a user is the software author's responsibility, and the passcode functions
as a licence check for transmitting. APRSdroid carries the same algorithm in the same
source file and deliberately does not use it to fill a blank, validating the operator's
entry instead. AprsPasscode follows that: it classifies an entry as Transmit,
ReceiveOnly, Mismatch or NotANumber, and anything not usable logs in as -1. The
connection still works and the operator is told separately that reports are not being
forwarded, but no packet goes out under a code the app made up.

AprsPacket.passcode stays, because validating an entry means recomputing the expected
value. Nothing substitutes it for a missing one.

Separately, and worse than the line above: the report notices never appeared at all.
onReport is invoked from AprsReporter's Dispatchers.IO scope, where constructing a
Toast throws because the thread has no Looper - and the surrounding runCatching
swallowed it. So the whole reporting path, including the unverified-login warning
added in the previous commit, was writing messages nobody could see. They now post to
the main looper. The one in startReporting is left alone: onStartCommand already runs
on the main thread.

Still outstanding for APRS, and not addressed here: the 0N 0E position fallback, the
missing TCPIP* path, the unbounded status field, the coroutine delay that does not fire
in Doze, and the dataSync foreground service type. Also unaddressed is the "Compute
passcode" button in AprsCard, which offers the operator the derived value directly and
so contradicts the policy this commit establishes - it was added by request, so it needs
a decision rather than a quiet removal.
2026-08-25 12:37:04 +00:00
mckero 7ac54f0a37 fix(aprs): report a failed send as failed, and a refused login as refused
Two defects made every APRS failure invisible. sendPacket ended with
`.getOrElse { Pair(true, "OK") }`, so a read that threw - including on a dead
socket - was reported as a successful send. And the login check threw inside a
runCatching whose result was discarded, so a server that refused to verify the
passcode could not propagate: aprsc keeps such a client connected and its writes
succeed while silently discarding every packet, which the app reported as success.
An audit put it plainly - twelve commits are all fix(aprs), none added a
socket-level test, so "it worked" was never evidence a packet had landed.

sendPacket now separates the cases. A read timeout stays a success, because
APRS-IS does not acknowledge position reports and silence is the normal outcome.
A closed stream or an IOException is a failure. The catch order matters and is
load-bearing: SocketTimeoutException extends IOException, so reversing them would
mark every normal report as failed.

The login handshake follows the spec: read the server's identification line first,
then log in, then read until a verdict arrives. AprsLogin holds that as pure logic
in core:domain with the parsing that decides it, including one trap worth naming -
"unverified" contains "verified", so the negative has to be tested first or every
refusal reads as acceptance. An explicit refusal now fails the report and shows
the operator its own message pointing at the callsign and passcode, in five
locales. A response we could not parse does not, since the packets may well be
landing and blaming the passcode would send them to fix something that works.

Three defects came out of review after that. The verdict is now bounded by a
deadline rather than a five-line budget, because a server that sent six keepalives
before its answer turned an accepted login into Unknown - telling the operator
their passcode was wrong when it had just been accepted. The greeting gets a short
two-second probe instead of the full login window, which cost eight seconds on
every connect to a server that sends none. And a refusal detected in the greeting
now aborts the connection instead of being overwritten by the next read, which had
made that branch and its comment a lie.

The worst of the three was mine: rewriting the write as print + flush dropped the
line terminator entirely. APRS-IS is a line protocol, so the server's reader never
saw a packet, while the send reported success and the read timed out into the
"silence is normal" branch. It broke healthy connections rather than dead ones and
was designed to have no symptom. Both the packet and the login line now end in an
explicit CRLF as the spec requires, rather than println's platform separator.

That defect is why this adds AprsIsClientSocketTest, which runs the client against
a stand-in server and reads the bytes back: it asserts two packets arrive as two
lines, that a login line arrives complete, that keepalive chatter does not bury the
verdict, that a greeting-less server connects promptly, and that a send to a closed
peer reports failure. Nothing in the pure-logic tests could have caught a missing
newline. Note for anyone extending it: closing the ServerSocket leaves an
established connection alive, so the dead-peer test has to close the accepted
socket - assuming otherwise made a correct implementation look broken.

AprsPacket.formatLogin is deleted, its work moved into AprsLogin.line, which also
replaces spaces in the version string because the server splits that field on
whitespace and the shipped value contained one.
2026-08-25 10:30:41 +00:00
mckero ce68f48765 feat(qrz): tell an expired cookie apart from a station with no grid
The grid lookup returned String? and swallowed everything with catch { null }, so a
timeout, an expired cookie, a QRZ layout change and a station that simply has not
published a locator were one indistinguishable blank. The operator saw an empty grid
with no way to know that re-pasting their cookie would fix it. There was also no
retry at all, on a phone, mid-pass, on mobile data.

QrzGrid names the four outcomes and QrzGridParser holds the parsing, which is pure
string work and now testable without a network. The fetch moves to core:data as
QrzGridSource, using the project's own OkHttp client with three attempts and 700ms
then 2000ms of backoff. Only transport failures and 5xx are retried; a 4xx would
repeat identically. This also gets java.net.URL I/O out of core:domain, which that
module is meant to stay clear of for the KMP move.

Classifying signed-out took two goes. Keying on the detail table being absent held
for an expired cookie - QRZ genuinely serves no detail rows to an anonymous visitor,
verified against a live response - but an audit found that a callsign QRZ has never
heard of returns HTTP 200 with no detail rows either, because QRZ serves its search
form instead. That would have reported a mistyped callsign as an expired cookie and
sent the operator into settings mid-pass to re-paste one that was never broken. It
now keys on QRZ's own "Login is required for additional detail" notice, so an absent
locator degrades to the harmless outcome and only QRZ actually asking for a login
triggers the cookie prompt. All three cases are measured against live responses.

Not yet wired in: LogTab and SettingsScreen still call the old QrzGridClient, so
nothing changes for the operator yet. Cutting over needs an interface in core:domain
and a MainContainer provider, because feature modules cannot reach core:data
directly - and the cookie itself belongs in SettingsRepo rather than the separate
prefs file a composable currently reads through LocalContext.
2026-08-25 08:39:40 +00:00
mckero 38f939bd49 fix(wavelog): resolve the LoTW satellite name from the catalogue number
LoTW refuses a QSO whose SAT_NAME is not spelled as its accepted list has it - its
own help page gives AO7 against AO-7 as a rejection - so the name we upload decides
whether a contact can ever be confirmed. The old code derived it with
substringBefore('('), which returns the descriptive half of a TLE name rather than
the OSCAR designator: measured against live Celestrak amateur data, 0 of 96
satellites resolved to something LoTW accepts. ASRTU-1 went up as ASRTU-1 where
LoTW wants AO-123.

Keying on the name cannot be made to work, because the sources disagree. Of the 49
satellites carried by both Celestrak amateur and AMSAT nasabare, 33 are named
differently - 43017 is RADFXSAT (FOX-1B) in one and AO-91 in the other, 43700 is
ES'HAIL 2 against QO-100 - so which name a QSO got depended on where the operator
fetched their TLE. The catalogue number is identical everywhere, so the table is
keyed on it and OrbitalPass.catNum is now threaded through to the QSO and persisted.

The name path stays as a fallback for contacts logged before the number was
recorded, and got two fixes of its own: it tries either side of the parentheses
rather than assuming the designator is on the left, and tolerates a differing
separator so RADIO ROSTO (RS15) reaches RS-15. Resolution now returns the list's own
spelling, so Arsene is not uploaded as ARSENE and rejected the same way AO7 would be.

Measured on the same data: 3 names resolved before, 20 by name alone now, 30 with
the catalogue number, and no satellite that used to resolve stopped resolving.

The table gained the nine TEVEL-2 satellites after an audit found them missing.
Every source writes those TEVEL2-N while LoTW has TEV2-N, which stripping separators
does not bridge - TEVEL21 is not TEV21 - so they resolved to nothing at all. They
launched in 2025 and are workable now. Their numbering is not sequential: 63217 is
TEVEL2-1 while 63213 is TEVEL2-4.

All 38 entries were cross-checked two independent ways: every catalogue number
appears in the app's own configured sources under a name consistent with the LoTW
spelling, and ARRL's startDate for each name agrees with the launch year in the
TLE international designator - which is what would catch a number pointing at the
wrong object, since a name can match by luck. Nothing here was typed from memory;
an early hand-written draft had AO-123 as 62690 when it is 61781.
2026-08-25 08:38:45 +00:00
mckero 92499b1cf1 feat(wavelog): map NORAD catalogue numbers to LoTW satellite names
LoTW refuses a QSO whose SAT_NAME is not spelled as in its accepted list - its own
help page gives AO7 against AO-7 as a rejection - so the name we upload has to match
exactly. The existing code derives that name with substringBefore('('), which returns
the descriptive part of a TLE name rather than the OSCAR designator: measured against
live Celestrak amateur data, 0 of 96 satellites resolved to a name LoTW accepts.
ASRTU-1 uploads as ASRTU-1 where LoTW wants AO-123.

Keying on the name cannot be made to work, because sources disagree. Of the 49
satellites carried by both Celestrak amateur and AMSAT nasabare, 33 are named
differently - 43017 is RADFXSAT (FOX-1B) in one and AO-91 in the other, 43700 is
ES'HAIL 2 against QO-100 - so which name a user gets depends on the source they
happen to fetch from. The NORAD catalogue number is identical everywhere, so this
table is keyed on it.

Coverage is 29 entries, not the 112 names LoTW lists, because the rest are satellites
no source still carries: they have re-entered, no user can track them, and a mapping
for them would never be consulted. Every number was read out of live TLE data from the
app's own configured sources rather than typed from memory - a first attempt at writing
them by hand had AO-123 as 62690 when it is 61781.

Three names matched more than one catalogued object and were settled by which object
the amateur-specific sources carry. ARISS is 25544, the station; the full catalogue
also lists ISS (UNITY), (ZVEZDA), (DESTINY) and (NAUKA), which are modules. IO-117 is
53109, named GREENCUBE (IO-117) by four sources against R4UAB alone calling it
ROBUSTA 1F. TO-108 is 44881, in all three amateur sources, where 44879 is TIANQIN 1.

Not yet wired into the upload path: WavelogQso carries only a satellite name, so the
catalogue number has to be threaded through from the radar screen first. This commit
adds the table and its tests only, leaving behaviour unchanged.
2026-08-25 06:16:08 +00:00
mckero b6753a4fa6 Revert "fix(cw): scale and band-pass the shifted audio instead of clipping it"
This reverts commit 0889a3bd88.
2026-08-23 09:42:45 +00:00
mckero 0889a3bd88 fix(cw): scale and band-pass the shifted audio instead of clipping it
The mixer runs above unity for any ordinary input - the Hilbert kernel's L1 gain
is 2.51, so amplitude 0.7 peaks at about 1.76 - and the output was hard clipped
to fit. Clipping squares the waveform off and generates odd harmonics, which the
widened waterfall would now put on screen.

Measured, the harmonics happen to be harmless today: TARGET_HZ is a quarter of
the sample rate, so 3f, 5f, 7f and 9f all fold back onto the tone itself and
out-of-band energy stayed at 0.00%. That is a coincidence between two constants,
not a property of the design. At a 700 Hz target the third harmonic folds to
1100 Hz - inside the analysis window, where no filter may remove it and the model
would read it as a second tone.

So two changes, because neither alone is enough. A peak-following gain scales the
mixer output to fit rather than clipping it: measured 0 of 3200 samples on the
rail, against a clipped waveform parking there for much of every cycle. And a
95-tap windowed-sinc band-pass over the model's window removes whatever the mix
leaves outside it - images, harmonics, the far sideband - measured at 58-60 dB
rejection with 0.09 dB of passband ripple and out-of-band energy down to 0.0002%.
The gain is shared across chunks so it cannot step at a boundary, and the filter
carries tap history for the same reason the Hilbert filter already did.

The band-pass adds 47 samples of linear-phase group delay, 14.7 ms, which delays
the keying envelope without distorting it - 4% of a dot at 40 WPM.

CwToneShifterStreamingTest's boundary criterion was wrong, and the band-pass
exposed it: distanceToBoundary measured only forward, so the first samples of a
chunk came out 320 away from "the" boundary and counted as interior when they are
the far side of the same seam. Both filters need samples ahead of the output they
are producing - 32 for the Hilbert transform, 47 for the band-pass - and with the
distance measured to the nearest boundary either way, interior divergence is
0.000116 against a 0.01 budget.

Also: the CW transcript now follows the newest text, but only while the operator
is already at the bottom, so scrolling back to read earlier traffic is not undone
by the next decoded character.
2026-08-23 06:27:10 +00:00
mckero 10c415fabd feat(cw): draw the whole audio band so an out-of-window tone is visible
The waterfall showed only the model's 400-1200 Hz window, so a tone outside it
was absent from the picture entirely. Measured on keyed audio, the brightest
column in that narrow view swings 1.01x between key-down and key-up against
13.76x for a tone in range - it carries no keying at all, so the operator could
not tell a signal was present, let alone where it was. Markers alone could not
fix that: they pointed at a frequency with nothing drawn there.

compute() now takes an optional bin range, defaulting to the model's own, so the
decoder path is byte-identical and the golden-vector test still holds. The
display asks for DC to Nyquist, 129 bins against 65. The FFT already computed
every bin - this only changes which are kept - so the cost is a wider copy.

The decoder window is framed and faintly lifted, since half the picture is now
outside what the model reads and nothing said which half.

Marker fixes found while reviewing the render: the tone marker was orange, which
is a colour the inferno ramp itself passes through, so a marker sitting on the
trace it pointed at was indistinguishable from the keying gaps in that trace -
invisible in exactly the case it existed for. It is cyan now, and both markers
are pips in a gutter above the spectrum rather than lines across it.

Also from the release audit:

- compute()'s bin-count guard was written as a three-term disjunction, which any
  custom range satisfies regardless of bin count, leaving the model invariant
  unenforced for the caller most able to break it. Rewritten as an implication,
  with a Nyquist bound so no range can index past the FFT output.
- signalStrength was gated on a confirmed out-of-window tone, which is false when
  detection fails - and it fails for a slow fist, measured at prominence 2.5
  against a 4.5 threshold for 15% duty. So the meter still read half scale beside
  an empty transcript. It now requires a tone confirmed decodable: 11 flow
  combinations, 3 wrong before, 0 wrong after.
- detectedToneHz never expired, so after retuning into the band the hint kept
  naming the frequency the operator had left, indefinitely. It now clears after
  10 s without a tone, which is clear of any real gap - the longest being 1.7 s
  between words at 5 WPM.
- The waterfall label read estimatedPitch while the hint read detectedToneHz, two
  numbers up to 800 Hz apart both claiming to be the tone. Both read the latter.
- Removed a redundant toFloat() that the compiler warned about.

Accessibility, untouched until now: the waterfall was a bare Canvas and the AMSAT
day cells bare Boxes, so both announced nothing at all - on the status page that
is the entire content of the screen. Both now carry a contentDescription naming
the tone or the day's worst status and report count. The AMSAT tap target goes
from 28 dp to 48 dp with the coloured tile still 28 dp, so the grid keeps its
density. Strings in all nine locales for both modules.
2026-08-23 05:50:59 +00:00
mckero 984a139a81 feat(amsat): let the operator choose the day-cell style
Opinion split on the stripes, so Settings > Other now has a switch. On by
default, since the flat tile it replaced hid intra-day outages, which is the
problem the stripes were introduced to solve.

Flat mode is deliberately not the old behaviour. The old cell took its colour
from the first slot with a report and its count from that same slot, so a day
that worked in the morning and failed all afternoon read as "worked" - measured
across eight representative day shapes, two of them had their failure hidden
outright, and the count reported 1 where the day held 24 reports. Flat mode now
takes the day's worst status and the day's total count, so the summary can
understate detail but not hide bad news. The help text says so, in case someone
turns the switch off expecting the tile they remember.

The count is drawn in black or white by relative luminance rather than always
white: on the telemetry amber, white measured 1.83:1 against WCAG's 3:1 for
large text, and that cell does carry a count whenever a day held nothing but
telemetry reports. All six status colours now clear 3:1, the worst being 3.03.

SatStatusViewModel collects the setting rather than reading it once - the switch
is on another screen, so the operator is always elsewhere when they change it
and would otherwise return to the old style.

Strings in all nine locales.
2026-08-23 02:56:05 +00:00
mckero 4cb03111bc fix(cw): stop the decoder claiming a healthy signal it cannot hear
With tone shift off and the operator tuned outside 400-1200 Hz, the page did not
go quiet - it went confidently wrong. Three measurements, all reproduced against
the real spectrogram path:

estimatedPitch is (32 + loudestBin) * 12.5 - shiftHz with the bin confined to
0..64, so with no shift applied it can only ever report 400-1200 Hz. It cannot
express 1500 Hz, and it does not try: it publishes whichever window edge the
leakage piles against. For a 1500 Hz tone that is 1200 Hz.

That leakage is not faint. The waterfall normalises to the loudest value on
screen, so 50 of 65 bins clear the 0.06 draw threshold and the picture shows a
keyed-looking column pinned to the right edge - the 1200 Hz column runs 25 times
the 400 Hz one.

signalStrength is prominence over the window mean, so the same leakage scores
0.78 and paints the meter to 78% of full width.

So the operator got a strong-signal bar, a plausible 1200 Hz readout, a picture
that looked like a signal, and an empty transcript, with nothing saying why.

The scan that can see past the window now runs whether or not shifting is
enabled - it is the only measurement that can - and publishes through a new
detectedToneHz flow kept separate from estimatedPitch. Overloading the latter is
what let the 1200 Hz claim out in the first place, so the two meanings stay in
two flows. The shift decision still only happens when the setting is on. Cost is
one 121-bin scan every 2 s.

The meter now reads zero when a tone is out of range and not being shifted in: it
is a claim that something decodable is present, and in that state nothing is.

A line under the waterfall says which case the operator is in - the tone was
moved in, or it is out of range and tone shift is off, naming the frequency and
the remedy. Strings in all nine locales; feature:cw only had five, so values-es,
values-ru, values-si and values-uk are new, with the Turkish apostrophe escaped.

CwToneShifterTest pins the premise the hint rests on: that the scan reports tones
the model window excludes, at 120, 250, 1400 and 1500 Hz.
2026-08-23 01:42:37 +00:00
mckero 23f47d9122 fix(cw): keep the shift marker visible when the pitch readout goes negative
The guard suppressed every marker, the target line included, whenever the
reported pitch was not positive. Shifting a low tone UP makes that routine:
pitch is (loudestBin * 12.5 - shiftHz), so with a 100 Hz tone shifted +700 Hz it
goes negative for 25 of the 65 bins, down to -300 Hz, and updateSignalMetrics
applies no prominence test so mains hum in a key-up gap is enough to park the
argmax down there. 77 reachable (tone, bin) pairs across 100-350 Hz produce it.
The result was the display showing nothing at all while the shift was active -
exactly what the previous commit set out to fix.

The target line is now drawn on the strength of the shift alone, since a shift
being applied is the fact worth showing and it does not depend on the pitch. A
non-positive pitch marks the low edge, which is where such a tone actually is,
and only the numeric label is suppressed because the number itself is nonsense.
A NaN pitch previously slipped past all three comparisons and rendered the HIGH
edge marker labelled "0 Hz"; it now draws the target line only.

TONE_SHIFT_TARGET_HZ reads CwToneShifter.TARGET_HZ instead of recomputing the
window midpoint. The two are equal today by coincidence, not construction:
retuning either would leave the green line marking a frequency nothing is
delivered to, silently. CwToneShifterTest now pins TARGET_HZ inside the window
and clear of its edges, which is the one part of this the JVM suite can hold.

The label side now tips at the target rather than the window maximum, so a pitch
sitting on the upper edge gets its text on the same side as its line.
2026-08-23 01:15:03 +00:00
mckero fa73328936 feat(cw): show tone-shift markers on the waterfall spectrogram
When the tone-shift feature moves a tone into the model's 400-1200 Hz window,
the waterfall now shows two visual markers so the operator can see what is
happening: a green dashed line at the target (800 Hz) and an orange frequency
label at the top-left showing the original pitch.

The waterfall draws the RAW audio, not the shifted audio, so a 1500 Hz tone was
always invisible regardless of the shift setting. The markers close the gap:
the operator can now see that a tone was detected and where it was moved, even
when the original pitch is outside the visible band.

activeShiftHz is now a StateFlow exposed through ICwDecoder so the UI can
observe it without polling.
2026-08-22 15:32:33 +00:00
mckero 018a3afd2b fix(amsat): mark satellites whose reports were crowded out of the global pull
The API caps at 500 records regardless of the hours requested. With 88 catalog
satellites, eight of them more active than 50 reports per 72 hours, quieter
satellites get crowded out. Measured live: the global pull returned 500 reports
covering 36 satellites, while the summary endpoint reported 743 reports across 38
satellites. 26 of 38 satellites had incomplete data, and two (PO-101_[FM] and
TEVEL2-6_[FM]) had zero reports in the global pull despite having reports in the
summary.

The summary endpoint (api/v1/summary.php) returns per-satellite report counts in
one request, so the fix adds one extra call rather than the 88-request
alternative of per-satellite pulls. A satellite whose global pull is incomplete
gets a subdued "68 / 116" marker next to its name, telling the operator the page
knows there is more data it could not fetch. The marker is silent when the
summary is unavailable or the counts match, so the feature degrades gracefully.

The earlier no-data grey (0xFFE8E8E8) already prevented the worst case: slots
crowded out of the global pull were marked as "we never looked" rather than
claiming "nobody reported". The marker now closes the remaining gap: the page
can honestly say "we know there are 116 reports for this satellite but we could
only show you 68 of them".

Also fixed a subagent mutation-testing residue: the coverage floor had been
moved from global (reports.minOfOrNull) to per-satellite (satReports.minOfOrNull)
and left in the tree. One test caught it (coverage is judged from all reports,
not one satellite's), proving the test has teeth.

Adds getAmSatSummary to IRemoteSource and RemoteSource, parseSummary to
AmSatRepository, and summaryCount to SatStatus. All eight test-file
implementations of IRemoteSource were updated for the new method.
2026-08-22 11:47:42 +00:00
mckero 8f646d76f9 fix(amsat): align the status grid to UTC calendar days, one stripe per slot
Two defects in our own AMSAT page, both found by auditing the change that exposed
them.

The day columns claimed to be dates but were a rolling window anchored on the
fetch time. Fetching at 06:07 UTC put 17.9 hours of yesterday into the cell
labelled today; measured against a live amsat.org page of 1021 reports, 73% of
them landed in the wrong day column and none matched the official cell. Days are
now UTC calendar days and slots are fixed UTC bands - slot 0 is 22:00-24:00, slot
11 is 00:00-02:00 - so a cell's contents match its label whenever it is fetched.

The day cell painted one colour for the whole day, taken from the first slot that
had a report, so a satellite that worked all morning and failed all afternoon
looked identical to one that worked once - the reported symptom. It now draws one
stripe per two-hour slot in the same 64x28 dp footprint. Twelve stripes are about
5 dp each, roughly 15 px at 440 dpi, and runs of the same status merge visually,
so a day reads as a few blocks rather than twelve lines. Every density from ldpi
up allocates all twelve without dropping one, and the 4 dp corner radius leaves
95% of the end stripes visible. The report count text is gone; tapping a day
still lists every report from it, which was already the richer view.

buildStatuses and ApiReport are internal rather than private so the grid contract
can be tested. AmSatSlotBuildTest drives it directly: fetchStatus cannot be
tested here because the parsing around it uses Android's JSONObject, a JVM stub
that makes every call return null - eight of nine tests written against it failed
for that reason before being rewritten.

Also corrects three KDoc comments claiming 5 days when the code builds 3, and
records in AGENTS.md that the status colours are ARGB literals in core:data,
duplicated in MainTheme, which anything needing themeable or colour-blind-safe
colours has to fix first.
2026-08-22 06:59:39 +00:00
mckero ea125d7db4 refactor(cw): move the shift decision into core:domain so tests can reach it
Mutation testing found the decision rule was effectively untested. Four defects
injected into it - removing the silence guard, comparing shifts instead of
tones, never setting the hysteresis anchor, and inverting the comparison - all
left the entire suite green. The rule lived inside CwDeepDecoder, which needs an
Android Context and a loaded ONNX session, so tests could only restate it, and a
restated rule cannot fail when the real one is wrong.

CwShiftDecider now holds the rule as a pure class that both the decoder and the
tests drive. Its outcome is reported as an enum so the decoder's logging is a
presentation concern rather than a second copy of the logic. CwShiftDeciderTest
targets each of the four surviving mutants directly.

MIN_PROMINENCE lowered from 8.0 to 4.5. Raising it to 8.0 last round overshot:
measured on 400 ms windows of keyed CW in noise, a comfortably copyable signal
reaches only 7.6-9.0 at 0 dB SNR and 5.2-6.7 at -3 dB, so 8.0 silently refused
to shift weak out-of-window signals - the exact failure the feature exists to
prevent. Pure noise peaks at 2.2-3.4, so 4.5 keeps zero false positives across
40 noise windows while retaining the weak end. A false tone is worse than a
missed one: it moves a good signal out of range, whereas a miss leaves the audio
alone until a stronger window arrives. Windows dominated by keying gaps measure
2.4 and are indistinguishable from noise at any threshold; those are skipped.

Test files reorganised to match: the decision rule is covered by
CwShiftDeciderTest against real code, signal-level properties by
CwToneShiftSignalTest, and the restated-logic file it replaces is gone.

80 CW tests pass, golden vectors included.
2026-08-22 04:02:28 +00:00
mckero fdb44af9ff fix(cw): stop silence and edge estimates from defeating the tone shift
Two audit findings, both measured, both able to silently disable the feature.

A detection window landing in a keying gap used to collapse an established
shift to zero. CW is keyed, so gaps are normal: over 180 s of keyed audio at
1400 Hz, 11 of 90 detections saw no tone, and each one wiped the decode window
and left the next ~2 s buffered unshifted - outside the model's range and
therefore invisible to it. Absence of a tone is now absence of evidence and the
active shift is retained.

Hysteresis moved from shift space to tone space, anchored on the pitch that
produced the active shift. The old rule required a non-zero previous shift and
a needed shift, so it lapsed exactly where the jump is largest: at the 1200 Hz
edge one 12.5 Hz estimate hop flips between "inside" (shift 0) and "outside"
(a large shift). Measured 35 window drops in 60 detections for a 1205 Hz tone,
and 10 in 10 for a bare one-bin hop. A shift of zero is a real state, not the
absence of one. Slow drift still catches up, since the anchor bounds staleness
at the margin rather than letting it accumulate.

Detection prominence raised from 3.0 to 8.0. Pure noise peaks at 2.0-3.3 times
its own spectral mean, so 3.0 admitted roughly one noise window in five as a
"tone" - and a false tone is worse than none, since it moves a good signal out
of range. Keyed CW measures 47-51, so the gap is wide.

Shifted output is clamped to the +/-1.0 range the spectrogram assumes. The
Hilbert kernel's L1 gain is 2.51, so mixing overshoots: a full-scale square
wave measured 2.35 and even a plain sine 1.05.

The detection pool moved to core:domain as CwDetectionPool so its ring
behaviour can be tested directly - mutation testing showed the previous private
implementation was unreachable from any test. Its chronological-order contract
now has 11 tests driving the real class.

Removed the write-only detectedToneHz field.

74 CW tests pass, golden vectors included.
2026-08-22 02:35:58 +00:00
mckero 9798107d37 feat(cw): optionally shift out-of-window CW tones into the model's range
DeepCW only analyses 400-1200 Hz - its input tensor is 65 bins wide, fixed at
training time - so a CW note outside that range is invisible to the decoder.
This adds an opt-in preprocessing step that moves such a tone to 800 Hz, the
window centre, extending the usable pitch range without touching the model.

Single-sideband mixing via a 63-tap Hilbert transformer. Plain real mixing was
measured and rejected: shifting 1500 Hz to 800 Hz left a fold-back image at
1000 Hz at 0.999 of the wanted amplitude, inside the window. Zero-stuff
upsampling plus lowpass handled downward shifts but left a 0.996 image when
shifting 300 Hz upward. The Hilbert approach measures clean on nine tones from
150 to 1550 Hz: one peak at the target, nothing above 0.3 relative amplitude.
In-window energy for a 1500 Hz input goes from 6.8% to 94.6%.

Only out-of-range audio is processed. A tone already inside 400-1200 Hz is
returned untouched (same array instance, no copy), and with the setting off the
audio path is exactly what it was before.

CwToneShifter.Streaming carries the Hilbert filter history and mixer phase
across capture chunks. Shifting each chunk in isolation left 62 of every 320
samples convolving against zeros, inflating envelope ripple to 8.7x the
whole-buffer baseline. A residual difference in the last ~3 samples of each
chunk is causal and documented: those output samples would need input that has
not been captured yet.

Detection pools chunks rather than gating on one. A capture chunk is 4410
samples at 44.1 kHz but only 320 after resampling to 3200 Hz, so requiring
1280 samples in a single chunk would have made the feature dead code - the two
independent audits both found this before it shipped. Detection now runs on a
pooled 0.4 s window, at most every 2 s.

Toggling the setting or a change in the detected shift drops the buffered
audio: the 20 s window would otherwise keep decoding samples moved by the old
amount, and the pitch readout could only be correct for one of them. The
readout itself subtracts the active shift so it shows the pitch on the radio,
not the shifted one.

Settings: OtherSettings.cwToneShiftEnabled, off by default, persisted and read
back in SettingsRepo, toggled from the Other card in Settings with a help line
explaining the 400-1200 Hz limit. Strings added to all nine locales. The
decoder reads the flag per chunk, so the toggle applies without restarting
capture.

Debug: the enabled-state transition, each detection verdict (no tone / inside
window / shifting by N Hz), and every shift change are logged, with the noisy
paths throttled to the 2 s detection interval. CwProbe records shift changes
only, keeping well inside its 1 MiB cap.

Tests: 8 shifter tests (detection sweep, noise rejection, pass-through
identity, image-free shifting across 8 tones, end-to-end spectrogram energy),
8 streaming tests (chunk continuity, history retention, reset semantics, chunk
sizes above and below the history window), and 6 gate tests including a
regression guard that a 320-sample chunk must be able to reach the detection
threshold. All 53 CW tests pass, golden vectors included.
2026-08-22 01:07:38 +00:00
mckero 40ba3fecdf chore(amsat): remove the HTML scraping path superseded by the JSON API
The merged upstream AMSAT implementation fetches status data from AMSAT's JSON
endpoints (getAmSatCatalog / getAmSatReports), so the fork's HTML scraping path
no longer has a caller:

- core/data/.../source/AmSatParser.kt (136 lines): parsed the amsat.org status
  table, deriving state from the page's inline colour codes.
- IRemoteSource.getStatusHtml() plus its RemoteSource implementation and the
  DatabaseRepoTest fake override.

Verified zero references repo-wide before removing, and again afterwards.
Request / CancellationException imports in RemoteSource remain in use by the
other fetchers. compileReleaseKotlin plus core:domain / core:data /
feature:map / feature:roaming unit tests stay green.
2026-08-20 15:00:13 +00:00
mckero a654735337 merge: upstream rt-bishop main (18 commits) with conflict resolution
Merges rt-bishop/Look4Sat main (a42a5f1f, 18 commits: AMSAT status page,
customizable data sources, Doppler calculator, radar compass offset, per-sat
offset memory, localized date formats) into the fork's 30-commit audit
baseline.

Conflict resolution policy (user-directed):
- AMSAT feature (AmSatRepository, SatStatusScreen/ViewModel, SatStatus model):
  upstream version, which the user judged better built. MainScreen routes
  Screen.AmSat through SatStatusDestination().
- Localization: our values-zh/values-tr restored (upstream's merge dropped the
  fork-only strings); new upstream strings (sat_group counts, compass offset,
  frequency offset help) added in EN + ZH.
- fork-only features kept (CW decoder, Mutual/Roaming, WaveLog, APRS, Log tab,
  custom TLE/transceiver source switches): ours.
- Both sides' additions merged where independent: radar compass offset fields
  (Settings/SettingsRepo/RadarState), calculatorOffsetKHz action, wider linear
  transponder detection, deduplicateTransponders + its tests, sunrise/sunset
  tests merged with the moon hour-angle test.
- Sources kept as the fork's map structure (DatabaseRepo depends on it);
  satelliteModes list re-added for SelectionRepo. getSatelliteTypesIds /
  setSatelliteTypeIds re-added to ISettingsRepo+SettingsRepo; SharedDialog
  re-added to Components; providePairedBluetoothDevices added to
  IMainContainer/MainContainer.
- Icons renamed upstream (ic_satellites->ic_sputnik, ic_radar->ic_satellite)
  applied to Navigation/MutualScreen.

Build verified: all modules compileReleaseKotlin + unit tests
(core:domain, core:data, feature:map, feature:roaming) green.
2026-08-20 12:35:01 +00:00
atsunatsuandatsunatsu a42a5f1f0d Tweaked sunrise/sunset calculations, added unit tests (#241)
Co-authored-by: atsunatsu <atsunatsu@users.noreply.github.com>
2026-08-19 14:46:39 +02:00
mckero ed1fe66892 fix(geo): replace the clipLon while-loop with a modulo reduction
clipLon reduced longitudes by looping += 360 until in range. That never
terminates for extreme inputs: Infinity minus 360 is still Infinity, so
clipLon(Double.POSITIVE_INFINITY) hung forever (confirmed by a probe that had
to be killed), and a ~1e12 degree value took billions of iterations, freezing
the map thread. NaN came back as NaN either way.

A modulo reduction runs in O(1) and is bit-equivalent to the loop across the
whole finite domain: a probe sweeping -10000..10000 at 0.01 degree steps (2
million points) plus the boundary values -180/-179.999/0/179.999/180/180.001/
±360/±540 shows zero mismatches. The +180 boundary is preserved by mapping a
modulo result of -180 back to +180 when the input came from the positive side,
matching the old closed-interval behaviour (180 stays 180, only > 180 wraps).

Non-finite inputs return unchanged, so NaN keeps its previous semantics and
Infinity no longer hangs the caller.

New ClipLonTest pins the closed-interval values, the loop-equivalence sweep,
and the immediate return for extreme inputs (the last one hangs the suite if
the while-loop ever comes back).
2026-08-16 09:41:35 +00:00
mckero af96fe1cf0 test(predict): pin the Moon hour angle to a reduced range
MapViewModel converts MoonPosition.gha into the sub-lunar longitude with
`if (gha <= 180) -gha else 360 - gha`, which is only a valid longitude while gha
stays inside 0..360. Nothing enforced that: getMoonPosition relies on
`while (teg > 360) teg -= 360` reducing GMST before the single
`if (gha < 0) gha += 360` correction, and the raw GMST polynomial is about
3.5e6 degrees today, so losing that one line silently pushes the Moon marker
millions of degrees off the map instead of failing loudly.

Sweep a synodic month at 37-minute steps (1,167 samples) asserting gha stays in
0..360 and the derived longitude in -180..180, plus a check that the hour angle
advances 10-20 degrees per hour.

Verified the test has teeth: deleting the teg reduction makes both cases fail;
with the current implementation :core:domain:test is green. No production change
- the existing code is correct.
2026-08-14 18:54:26 +00:00
mckero d5230b3bc6 fix(qth): correct Maidenhead boundaries and longitude wrapping
A full-domain round-trip probe found three related boundary bugs.

1. Exact positive limits wrapped the square/subsquare terms to zero

positionToQth clamped only the A-R field index. At +90 latitude / +180
longitude the field saturated at R, but all later terms used modulo and wrapped
to square 0 / subsquare a:

  (90, 180) -> RR00aa00 -> (80.002083, 160.004167)
  error: -9.998 deg latitude, -19.996 deg longitude

The existing test incorrectly asserted RR00aa00 and had therefore fossilised
the defect. Clamp shifted coordinates just inside the half-open upper bound so
the limits land in the final cell RR99xx99.

2. isValidPosition allowed longitude through +360

Maidenhead covers -180..180, but 181..360 was accepted and produced plausible
locators that decoded 20-200 degrees away:

  lon 181 -> decoded 161.004167  (error -19.996)
  lon 270 -> decoded 170.004167  (error -99.996)
  lon 360 -> decoded 160.004167  (error -199.996)

Restrict the converter contract to -180..180.

3. Locator validation allowed S-X as field letters

The first pair has 18 fields A-R, while only the later subsquare pairs use
A-X. The shared [A-X]{2} regex accepted SS00aa / XX99xx and decoded them past
the poles (up to lat 149.98, lon 299.96). Use A-R for the field pair.

The SettingsRepo caller had a separate wrapping bug that masked part of this:
it mapped longitude>180 by subtracting 180 (270 -> +90, wrong hemisphere)
instead of modulo 360 (270 -> -90). Fix that at the writer too.

Verification:
- standalone JVM sweep: 519,841 points, old code had 1,441 large-error points
  with max drift 9.997917 deg lat / 19.995833 deg lon
- new Kotlin regression sweep requires every 8-char round trip <=0.01 deg
- QthConverterTest BUILD SUCCESSFUL
- full :core:domain:test + :core:data:compileReleaseKotlin BUILD SUCCESSFUL
2026-08-14 15:57:32 +00:00
mckero 5f1f90067f fix(aprs): clamp altitude and wrap course to keep fixed-width fields
Both extensions are fixed-width decimal fields, but neither value was range
checked before formatting:

  formatAltitude(-50.0)      -> /A=-00164   ('-' eats a digit slot)
  formatCourseSpeed(_, 360f) -> /360/...    (course must be 000..359)
  formatCourseSpeed(_, -1f)  -> /-01/...    (widens the field)

A negative altitude is reachable from a below-sea-level position or a poor GPS
fix, and the malformed extension corrupts everything after it in the comment
field. Altitude now clamps to 0..999999, course wraps modulo 360, and speed
clamps to three digits.

Found by the same locale probe that produced the previous commit.
:core:domain:test BUILD SUCCESSFUL.
2026-08-14 15:12:30 +00:00
mckero f4e188261d fix(aprs): format packets with Locale.ROOT so they stay ASCII
All nine String.format calls in AprsPacket used the JVM default locale. On a
device set to Arabic, Persian or Bengali the digit shapes come out as
Eastern Arabic / Bengali numerals, so every position report was malformed:

  ar_EG  lat=٣٩٥٤.٢٥N  lon=١١٦٢٤.٤٤E  alt=/A=٠٠٠٣٢٨
  fa_IR  lat=۳۹۵۴.۲۵N  lon=۱۱۶۲۴.۴۴E  alt=/A=۰۰۰۳۲۸
  bn_BD  lat=৩৯৫৪.২৫N  lon=১১৬২৪.৪৪E  alt=/A=০০০৩২৮

APRS-IS is an ASCII line protocol, so aprsc rejects these packets outright:
APRS reporting simply never worked for those users, with no clear error.
A locale using ',' as the decimal separator would corrupt the range filter
the same way.

Affected: getDMS position encoding (all five ambiguity branches), the
DDMM.MM/DDDMM.MM assembly, formatAltitude, formatCourseSpeed and
formatRangeFilter.

TDD proof:
  without Locale.ROOT: 4 of 4 AprsPacketLocaleTest cases FAILED
  with Locale.ROOT:    BUILD SUCCESSFUL, full :core:domain:test green

Ruled out by the same probe (no change made): getDMS degree/minute split
matches an independent DDMM.MM reference implementation over 1,800,000 sampled
latitudes with zero divergence; the passcode loop dropping the trailing NUL on
even-length callsigns is the standard algorithm's behaviour.
2026-08-14 15:09:18 +00:00
mckero e1233dceaa fix(wavelog): preserve six-character grids in v1 ADIF upload
WaveLog v1 truncated every grid to four characters with gridsquare.take(4),
while v2 sent the same grid at full precision. QRZ backfill provides six-character
locators (e.g. OM89ab / FN31pr), so the v1 path - the one used by the user's
server in practice - degraded position precision from roughly 4.6 km to around
100 km and stored different data depending on which API version answered.

Send the complete grid through v1 as well. The ADIF length field is already
computed from the actual value, so six/eight-character locators need no special
handling.

TDD proof:
  old take(4): v1_adif_preservesSixCharacterGrid FAILED
  fixed:       WaveLogApiPayloadTest BUILD SUCCESSFUL
  full suite:  :core:domain:test BUILD SUCCESSFUL
2026-08-14 14:56:23 +00:00
mckero d749c5ab48 fix(domain): WavelogQueue.updateGridsquare 添加同步锁
问题:updateGridsquare 是唯一没有 @Synchronized 的修改方法,与 add() 并发(LogTab 主线程 add + 后台协程 updateGridsquare)会触发 read-modify-write 竞态,导致新 QSO 丢失。
修复:给 updateGridsquare 加 @Synchronized,与其他修改方法保持一致。
影响:消除数据丢失风险。
2026-08-14 09:19:41 +00:00
mckero cf93ca9f71 fix(ui): 修复菜单布局的三个严重 bug
Bug #1: moveToMain 误驱逐页面
- 根因:每次调用 moveToMain 都执行驱逐逻辑,即使页面本来就在主菜单
- 场景:拖拽主菜单内部顺序 → SettingsViewModel 遍历新顺序逐个调 moveToMain
  → 每次都判断 main.size > 5 → 误驱逐最后一个页面
- 修复:只在真正从 More 移到主菜单时才驱逐(加 wasInMore 标志位)

Bug #2: onReorder 传 resolve 输出污染状态
- 根因:SettingsScreen 拖拽回调传的是 resolve 输出(mainItems/subItems)
  而不是持久化输入(screenOrder/subMenuOrder)
- 场景:拖拽主菜单 → onReorder 传 [Radar, ..., Settings](完整列表)
  → Settings 被显式存入 screenOrder → 下次 resolve 当作用户手动放置 → 参与驱逐逻辑
- 修复:
  1. 拖拽主菜单时过滤掉 Settings(锁定页面用默认位置,不存持久化)
  2. 另一个菜单用输入的 screenOrder/subMenuOrder,不用 resolve 输出

Bug #3: onReorder More 菜单传错参数
- 根因:拖拽 More 菜单时传的是 mainItems(resolve 输出),不是 screenOrder
- 修复:改用输入的 screenOrder

影响:修复前,拖拽主菜单会丢页面,移页面到主菜单可能导致 Settings 消失
2026-08-14 00:43:23 +00:00
mckero 7cadded6ca fix(data): compute the OMM epoch day fraction numerically, not by string surgery
排查页面顺序问题时顺带审计发现: OMM/CSV 历元在子夜后约 86 秒内会被解析成
完全错误的值, 且不抛异常 —— 静默的错误数据。

## 根因

DataParser.parseCSV 用字符串拼接构造历元:

    val frac = ((hour + min + sec + ms) / 86400000.0).toString().substring(1)
    val epoch = "${year.substring(2)}$day$frac".toDouble()

substring(1) 的意图是切掉 "0.123" 的前导 0。但 Double.toString() 在数值
小于 1e-3 时切换为科学计数法, 于是被切掉的是【有效数字】, 剩下的指数后缀
让整个字符串重新变成一个合法但语义完全错误的 double。

Kotlin 侧实测(单测失败信息):

    00:00:01.000  期望 25001.000011574073  实得 0.2500115740740741
    00:01:00.000  期望 25001.000694444443  实得 2.5001944444444444

与 JDK 侧独立验证逐位一致。00:01:26.4 之后 frac >= 0.001, 不再用科学计数法,
所以这个 bug 只在每天前 86.4 秒的历元上出现(约占 0.1%), Celestrak OMM 数据
里整分历元并不罕见。

## 影响

runCatching 抓不到(没有异常), 该卫星的 juliandDateOfEpoch 会推出 year=2000
day≈0, tsince 偏差约 26 年 —— 方位/仰角/过境预报彻底失效, 不是精度下降。
且用户无从察觉。

## 修复

改为数值相加, 不经过字符串:

    val dayFraction = (hour + min + sec + ms) / 86400000.0
    val epoch = "${year.substring(2)}$day".toDouble() + dayFraction

"25001".toDouble() + 0.0000115 = 25001.0000115, 无科学计数法风险。

## 验证

DataParserTest 新增 5 个历元回归测试(子夜整点/子夜后 1 秒/子夜后 1 分钟/
正午/当日最后一毫秒)。先确认前两个在旧实现下失败(failures=2), 修复后:

- DataParserTest 24 个测试全绿(原有 19 个无回归)
- :core:domain:test 全量 105 个测试 0 失败 0 错误
2026-08-13 16:20:07 +00:00
mckero 6fc2f560b7 fix(nav): resolve the menu layout in core:domain so page order actually applies
用户报告"把 AMSAT 从更多菜单移到主菜单没生效"。排查后发现这是两个互相
掩盖的 bug, 其中一个会让用户永久无法进入设置页。

## Bug 1 (致命): 移任意页进主菜单 -> 设置入口从所有菜单消失

对"主菜单上限 5"的定义两处不一致:
- SettingsScreen.kt:892 判断 mainItems.filter { it != "Settings" }.size >= 5,
  上限是【不含 Settings 的 5 个】, 于是认为 [Satellites,Passes,Radar,Map]
  还有空位, 直接追加 -> 共 6 项
- MainScreen.kt:165 的 .take(5) 上限是【含 Settings 的前 5 个】, 而 Settings
  排在最后 -> 被截断丢弃

结果 Settings 既不在底栏也不在更多菜单(它不在 subMenuOrder 里), 用户再也
进不去设置页, 无法自行改回, 只能清数据或重装。

## Bug 2 (用户报告): AMSAT / WavelogLog 移到主菜单被静默撤销

MainScreen.kt:161-163 给老用户补新页面的迁移逻辑【无条件执行】:

    .let { list -> if ("AMSAT" in list) list else list + "AMSAT" }

用户把 AMSAT 移出子菜单后 subMenuOrder 里没有它, 这段又加回去, 第 165 行
filter { it.screenId !in subOrder } 于是永远过滤掉 AMSAT。

副作用: 这个 bug 恰好把主菜单拉回 5 项内, 反而掩盖了 Bug 1 —— 所以用户只
看到"AMSAT 移不过去", 没触发"设置锁死"。

## Bug 3: 溢出页面凭空消失而非落入更多菜单

.take(5) 直接丢弃超出的页面, 它们既不在底栏也不在更多菜单。

## Bug 4: 设置页展示顺序与底栏实际顺序不一致 (WYSIWYG 失效)

两处各自实现排序: 设置页不做 take(5)、用 sortedWith 把 Settings 钉最后;
MainScreen 做 take(5)、Settings 位置由 screenOrder 决定。

## Bug 5: 更多菜单里 AMSAT / Roaming 当前页不高亮

MoreMenuPopup.kt:69-79 的 when (currentKey) 缺 AmSat 与 Roaming 分支,
MainScreen.kt:188-198 缺 Roaming 分支, 靠 else -> false 兜底, 新增页面时
不会有编译错误提醒。Screen 子类都是 data object, 直接用 currentKey == screen
即可, 新增页面自动生效。

## Bug 6: 设置页主菜单区不过滤 hiddenScreens

MainScreen 会过滤隐藏页, 设置页不过滤, 于是隐藏的页面仍占据设置页的位置且
"移出主菜单"按钮可点, 与底栏实际情况不符。

## 改动

新增 core/domain/navigation/MenuLayout.kt (纯 Kotlin, 为 KMP 就绪) 作为菜单
布局的唯一入口:
- resolve(): 持久化偏好 -> 底栏 + 更多菜单。先给 Settings 预留名额再截断,
  溢出页面落入更多菜单而非丢弃; 两个列表都没提到的页面按默认归位(升级不丢页)
- moveToMain() / moveToMore(): 移动语义集中一处, 拒绝把 Settings 移出

MainScreen 与 SettingsScreen 改为共用它, 删除双份实现与无条件迁移逻辑。

## 死代码清理 (每项已 grep 全仓库确认零引用)

- SettingsAction.ResetScreenOrder: 无任何派发点, 仅定义与 when 分支
- UiSettingsCard 的 onReorder 参数: 函数体内两个 DragOrderList 的 onReorder
  实参都调 onUpdateMenu, 从未调用该参数
- SettingsAction.ReorderScreens: 唯一引用是上面那个死参数
- MainScreen 的 navigateToRadar 参数: 函数体内唯一出现是注释掉的一行
- Navigation.kt 的 defaultScreenOrder / defaultSubMenuOrder: 迁移后零引用,
  默认值已在 MenuLayout 内

保留 entry<RadarDestination> 分支不动 —— RadarDestination NavKey 被
PassDetailsMatcher deeplink 使用。

## 验证

- MenuLayoutTest 13 个新测试全绿, 每个对应上面一个 bug 场景
- :core:domain:test 全量 100 个测试 0 失败 0 错误
  (DataParser 19 / Doppler 17 / Qth 8 / Transponder 7 / CwCtc 7 /
   CwDeepBuffer 13 / CwGolden 3 / CwSpectrogram 8 / MenuLayout 13 /
   WaveLogApi 5)
- :core:domain:compileKotlin + :core:presentation + :app +
  :feature:settings compileDebugKotlin => BUILD SUCCESSFUL
- 用 Python 复刻新规则重跑当初失败的全部场景: 5 个页面逐一移入主菜单,
  设置入口全部保住、页面无丢失; 隐藏页 + 移动组合无页面丢失; 幂等性通过
2026-08-13 16:10:41 +00:00
mckero 21f14848da Merge origin/main (resolve CW fldigi vs DeepCW conflicts, keep DeepCW) 2026-08-13 13:39:13 +00:00
mckero 2e1d8b9c00 feat(cw): archive decoded history, polish the waterfall, document licensing
三个用户反馈一并解决:

1. 解码文字不再消失 (核心)
   旧实现: 20 秒环形缓冲满了就静默覆盖最旧样本, 文字随之从屏幕消失。
   新实现: CwDeepBuffer 新增 overflow —— 满时被覆盖的旧样本先进 overflow,
   解码器累积到 15 秒就单独解码一次, 结果追加到 historyText (只增不减)。
   UI 记录区显示 historyText + decodedText (历史稳定 + 当前窗口实时)。
   ICwDecoder 接口新增 historyText StateFlow。

   归档音频已离开主窗口, 不再被 CTC 修正, 故其文本是"最终版", 追加安全。
   归档窗口 15 秒: 内容已在 20 秒窗口里解过多次, 短一点几乎无损, 且推理
   开销小。

2. 瀑布图更好看
   配色从"深蓝->青->黄"换成 matplotlib inferno (黑->紫->品红->橙->黄),
   与静态频谱图保持一致。相邻 bin 之间用水平渐变做线性插值, 消除 65 列
   离散方块的像素感。

3. AGPL 合规补漏 (用户提醒: 仓库许可证没体现 AGPL 组件)
   README 新增 License 章节: 声明项目主体 GPL-3.0 + feature/cw 的 DeepCW
   模型 AGPL-3.0-only, 并说明合并作品按 GPL-3.0 §13 / AGPL-3.0 §13 处理。

验证:
- :core:domain:test => 31 个 CW 测试全绿 (CwDeepBufferTest 新增 3 个
  overflow 归档测试: 顺序/清空/reset)
- :core:domain:compileKotlin + :core:data + :feature:cw:compileDebugKotlin
  => BUILD SUCCESSFUL
2026-08-13 08:04:05 +00:00
Arty Bishop bd51044690 Added custom frequency offset setting to network reporting 2026-08-12 20:17:26 +02:00
mckero 9b0d543f12 refactor(cw)!: replace legacy CW engine with DeepCW in both entry points
DeepCW 成为唯一 CW 解码内核, 不保留旧引擎作兜底 (用户决定: 完全移植)。

删除旧内核 (1298 行):
- CwDecoder.kt / CwBayesianDecoder.kt / CwChannelTracker.kt / CwSpectrogram.kt
- CwDsp / CwFFT / CwSTFFT / CwGoertzel / CwFilter / CwResampler.kt
- CwDecoderTest.kt
旧内核的自动定频与 squelch 门控由 DeepCW 的 400-1200Hz 固定频窗替代 ——
模型自带定频, 不再需要频谱峰值跟踪和噪声门。

两个 CW 入口都改接 DeepCW:
1. feature:cw 独立整页 CwDecodeScreen.kt 重写为纯 Compose (瀑布图 -> 实时行
   -> 历史区), 移除 AndroidView/LayoutInflater 和被删的 activity_main 布局;
   删除 CwSettingsDialog.kt (旧引擎的手动音调/带宽面板, DeepCW 全自动无需)
2. feature:radar 内嵌可折叠面板改走 ViewModel 的 CW state/action, 移除
   Morse Expert 控制器与 cw_panel_main 布局
   (该面板此前注释写明 "no longer feeds it", ViewModel 里的 CW 通路是死代码)

新增 CwWaterfall.kt: 复用 CwDeepSpectrogram 绘制瀑布图, 显示的正是模型
分析的 400-1200Hz 频段与同一批幅值。

接口接线:
- IMainContainer.provideCwDecoder() 提供 ICwDecoder (实现需 Context 读 assets)
- RadarViewModel 构造新增 cwDecoderFactory, onCleared() 中 close() 释放
  OrtSession 避免原生内存泄漏
- 删除已无调用方的 RadarAction.CwSetToneFreq (DeepCW 定频固定, 无参数可调);
  CwSubState.cwToneFreq 语义改为只读显示检测到的音调

依赖清理:
- feature:radar 不再依赖 feature:cw 与 constraintlayout
- feature:cw 不再依赖 constraintlayout

字符串: feature:cw 清理 Morse Expert 遗留串 (premium/rate/help/
tap_back_again_to_close/purple_500), 按 en/zh/tr/in/id 五语补全新串;
core:presentation 补 radar_cw_tone / radar_cw_waiting 五语。

验证:
./gradlew :core:domain:test => 4 个测试类全绿
./gradlew :feature:cw:compileDebugKotlin => BUILD SUCCESSFUL
./gradlew :feature:radar:compileDebugKotlin => BUILD SUCCESSFUL
./gradlew :core:data:compileDebugKotlin => BUILD SUCCESSFUL
2026-08-12 13:00:25 +00:00
mckero 57762613a8 feat(cw): add CwDeepDecoder wiring ONNX Runtime to the CW pipeline
组装完整解码链路: 麦克风 PCM -> 重采样 3200Hz -> 20 秒滚动缓冲 ->
频谱图 -> ONNX 推理 -> 贪心 CTC -> 文本。

ICwDecoder 放 core:domain (纯 Kotlin, UI 可直接依赖), 实现放 core:data
(需要 Android Context 读 assets 及 ONNX Runtime 原生库)。

关键设计:
- decodedText 是替换语义不是追加: 模型会随上下文增加改写先前字符, 追加
  会把中间态 (BM -> BG7 -> BG7NTA) 永久留在屏幕上
- 推理用 Mutex.tryLock 串行化: 上一次未完成时直接跳过本周期, 慢设备不会
  堆积任务导致 OOM
- 推理在 Dispatchers.Default, 不阻塞音频采集线程
- 模型元数据从 model.onnx.json 读取 (字符表/blank 索引/输入输出名), 不在
  代码里硬编码, 模型更新时无需改代码
- lastInferenceMs 打点: 手机实际推理耗时需真机实测 (估算系数待验证)
- estimatedPitch 由频谱峰值 bin 反算, 仅供 UI 显示 —— 模型 400-1200Hz
  固定窗自带定频, 不需要频谱峰值跟踪参与解码
- 模型加载失败时 errorMessage 置位 (旧内核已删, 无兜底可退)
- close() 释放 OrtSession, 否则原生内存泄漏

验证:
./gradlew :core:data:compileDebugKotlin => BUILD SUCCESSFUL
2026-08-12 12:26:42 +00:00
mckero 13ef70810c test(cw): pin DeepCW front-end to the Python reference with golden vectors
把 Kotlin 前处理锁定到上游 deepcw-engine 的 Python 参考实现。

golden_spec.txt 由参考实现自身的预处理代码生成 (numpy reflect padding,
np.hanning(N+1)[:-1], np.fft.rfft, log1p), 覆盖一段确定性测试音频:
700Hz 方波键控的字母 C, 20WPM, 源采样率 8000Hz。两侧用同一个确定性公式
各自合成音频, 因此只需锁定频谱图结果, 无需落盘音频。

为何必要: 前处理只要有细微偏差 (窗函数用 symmetric 而非 periodic、padding
模式不对、bin 边界差一位), 模型仍会输出看似合理的文字, 实际全是乱码, 在
下游极难定位。此测试守住整条链路的入口。

验证:
./gradlew :core:domain:test --tests '*CwDeepGoldenVectorTest*'
=> tests="3" skipped="0" failures="0" errors="0"
77 帧 x 65 频段 = 5005 个数值逐一比对, 最大偏差在 1e-4 容差内;
重采样长度 9120@8000Hz -> 3648@3200Hz 与参考一致。
2026-08-12 12:21:26 +00:00
mckero 6a62f951ad feat(cw): add 20s rolling buffer with periodic full re-decode
DeepCW 是整段 CTC 批处理模型, 不能像传统 DSP 那样逐样本流式输出。

实测否决了滑动窗口+增量拼接方案。整段批处理 CER 0.0%, 而所有窗口/步进
组合最好仅 67.6%, 最差 294.1% (呼号被重复三遍)。根因是模型每获得更多
上下文就重写已输出内容 —— 同一音频逐渐加长时 11 次采样有 6 次修正前缀
(BM -> BG7 -> BG7NTI -> BG7NTA), 任何"只追加增量"策略都会把这些中间态
永久留在屏幕上。

改为: 固定 20 秒滚动缓冲 + 每 1.5 秒重解全量 + 整体替换显示。

参数由实测定案, 是两条约束的交点:
- 准确率侧: 20s 是达到 0.0% CER 的最小窗口 (16s 仍有 5.9%)
- 算力侧: 耗时超线性增长, 60s 音频推理耗时约为 20s 的 13 倍, 实时余量
  不足; 20s 时余量约 13 倍, 安全

实现: 环形缓冲, snapshot() 返回按时序展开的副本 (调用方无法污染内部
存储), append() 返回是否该触发重解。

验证:
./gradlew :core:domain:test --tests '*CwDeepBufferTest*'
=> tests="10" skipped="0" failures="0" errors="0"
含断言: 容量封顶、最旧样本先丢、环绕后时序正确、超容量分块只留尾部、
重解间隔不漂移 (150 个 100ms 分块恰好触发 10 次)、snapshot 不共享内存
2026-08-12 12:13:55 +00:00
mckero 0d3e02c596 feat(cw): add greedy CTC collapse for DeepCW output
把模型 log_probs [batch,time,42] 输出折叠成文本, 对齐参考实现
greedy_ctc_decode: 逐帧取 argmax, 去 blank, 再去连续重复标签。

blank 的作用: 两个相同字母之间的 blank 是保住真实双字母的关键
(例如 "5NN" 的两个 N), 否则会被折叠成一个。

验证:
./gradlew :core:domain:test --tests '*CwCtcDecoderTest*'
=> tests="7" skipped="0" failures="0" errors="0"
含断言: 连续重复折叠、blank 隔断保留双字母、呼号 "CQ BG7" 含空格与数字
2026-08-12 12:07:50 +00:00
mckero 7c22bf6ac1 feat(cw): add pure-Kotlin DeepCW spectrogram front-end
DeepCW 音频前处理的 Kotlin 实现, 逐步对齐上游 Python 参考实现
(deepcw-engine examples/python/decode_morse.py):

  线性重采样 -> 3200Hz, 反射 padding(128), periodic Hann(256),
  radix-2 FFT, 取 bin [32,97) 共 65 个 (400-1200Hz), log1p 归一化

实现要点:
- Hann 窗用 periodic 变体 (numpy np.hanning(N+1)[:-1]), 不是 symmetric,
  否则频谱与参考实现有偏差
- 反射 padding 不重复边界样本 (numpy mode="reflect" 语义)
- 自带 radix-2 Cooley-Tukey FFT, 不引入第三方 DSP 依赖 (FFT_LENGTH 为
  2 的幂, 无需补零分支)
- 放 core:domain: 无 Android 依赖, 可 JVM 单测, 保持 KMP 可迁移

模型 400-1200Hz 固定频窗意味着定频内建, 无需频谱峰值跟踪与 squelch 门控 ——
这正是旧内核最大的两个坑。

验证:
./gradlew :core:domain:test --tests '*CwDeepSpectrogramTest*'
=> tests="8" skipped="0" failures="0" errors="0"
含断言: 700Hz 正弦峰值落在相对 bin 24; 8000->3200Hz 重采样后频率不变
2026-08-12 12:05:13 +00:00
Arty Bishop 2f4e3f5802 Added the ability to fully customize data sources via import 2026-08-12 13:01:45 +02:00