Interactive analysis/demodulation of digital signals (BPSK, QPSK, 16-QAM). Built to help openstint development. Transponder test captures at recordings/.
python3 -m venv .venv
.venv/bin/pip install -r requirements.txt
.venv/bin/python demod_analyzer.py [capture.cs8]Try it on a synthetic signal:
.venv/bin/python make_test_signal.py test.cs8 --format int8 # rectangular pulses
.venv/bin/python make_test_signal.py test.cs16 --format int16 --rrc
.venv/bin/python make_test_signal.py qam.cs16 --format int16 --rrc --mod qam16
.venv/bin/python demod_analyzer.py test.cs8 # fs=1 MHz, skip 5000, SPS 8--mod bpsk|qpsk|qam16 picks the constellation (default bpsk). Run
make_test_signal.py without arguments for a GUI with a live preview of the
signal it is about to write.
Segment an IQ recording into smaller chunks based on RSSI
Generate test data; available in command line as well (see above)
Copyright (C) 2026 Attila Zseller
Licensed under the GNU General Public License v3.0 or later; see LICENSE for the full text. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.