mckero
92499b1cf1
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.
Look4Sat: Satellite tracker
Radio satellite tracker and pass predictor for Android, inspired by Gpredict
Track satellite passes with ease!
Thanks to Celestrak and SatNOGS you have access to over 9000 active satellites.
You can search the entire database by NORAD Catalog Number or the satellite's name.
Orbital positions and passes are calculated relative to your location.
To get reliable data make sure to set the station position via the app Settings.
The application is built using Kotlin, Coroutines, Jetpack Compose and Navigation.
It is now and always will be completely ad-free and open-source.
Main features:
- Predicting satellite positions and passes for up to 10 days
- Showing the list of currently active and upcoming satellite passes
- Showing the active pass progress, polar trajectory and transceivers info
- Showing the satellite positional data, footprint and ground track on the map
- Custom TLE satellite data import is available via Three Line Element .txt files
- Offline first: calculations are made offline. Weekly TLE data update is recommended.
License
The Look4Sat application code is licensed under the GNU General Public License v3.0.
The CW decoder in feature/cw bundles the DeepCW
neural decoding model, licensed under the GNU Affero General Public License v3.0 only
(AGPL-3.0-only). Because the combined work incorporates an AGPL-3.0 component, the
combined work is distributed under the
GNU Affero General Public License v3.0 — GPL-3.0 Section 13 permits the
combination, and AGPL-3.0 Section 13 applies to the combined work as a whole.
Model provenance and attribution are documented in
feature/cw/licenses/NOTICE.md; the original GPL-3.0
text is preserved at feature/cw/licenses/Look4Sat-GPL-3.0.txt. The CW model runs
locally on-device and does not provide services over a network.