mckero
1b8f8c46f6
Follow-up to the tone-shift feature, closing gaps the audits surfaced. Toggling the setting, or the detector settling on a materially different shift, now discards the buffered audio. Without it the 20 s decode window kept feeding the model samples moved by the old amount for up to 20 s after the user acted, and updateSignalMetrics corrected the pitch readout by an offset that no longer matched the window. Text already committed to the history is kept: it was correct when it was decoded. The previous-state flag is nullable and seeded from the current setting on the first chunk, so a decoder created while the setting is already on does not report a spurious change and wipe an empty buffer. reset() clears it back to null for the same reason. Two decoders can be live at once (the CW screen and the Radar panel) and each tracks its own state. Re-shifting is now gated by a 40 Hz hysteresis. Detection resolution is 12.5 Hz and a real tone wanders, so without it an estimate hopping between adjacent scan bins would drop the window every 2 s - costing far more decoding context than re-centring gains. 40 Hz absorbs two bins of jitter while still following a genuine retune; a test pins both halves of that trade-off.
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.