mckero
23f47d9122
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.
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.