UAT is a 978Mhz Frequency Shift Keyed signal. dump978 is a decent reference implementation to could look at. Essentially instead of extracting magnitudes and demodulating the AM signal, we need to extract phase shift which should give us an analog bitstream that we can process.
billylindeman
commented
3 years ago
It'd be nice to also have support for 978Mhz UAT
UAT is a 978Mhz Frequency Shift Keyed signal. dump978 is a decent reference implementation to could look at. Essentially instead of extracting magnitudes and demodulating the AM signal, we need to extract phase shift which should give us an analog bitstream that we can process.
For reference, these videos do a great job of explaining IQ Sample theory and how frequency modulation affects the I/Q components.
https://www.youtube.com/watch?v=h_7d-m1ehoY https://www.youtube.com/watch?v=5GGD99Qi1PA