The problem of detecting the presence of Gaussian frequency-shift keying (GFSK) modulated low-earth-orbit smallsatellite signal in the Industrial, Scientific, and Medical (ISM)- band at 914 MHz is considered. Challenges imposed by the communication link, namely the dynamic power range of received satellite signal, time-varying Doppler shift and a low signal-tointerference- and-noise ratio (SINR) regime are tackled with a cyclostationary approach. It is demonstrated that cyclic features can be exploited despite substantial time-varying Doppler shift and a detection statistic is developed. If the detector declares the signal as present, its Doppler shift is revealed and can therefore be compensated. The performance of the proposed detector is evaluated on both simulated and real-world data.    «

The problem of detecting the presence of Gaussian frequency-shift keying (GFSK) modulated low-earth-orbit smallsatellite signal in the Industrial, Scientific, and Medical (ISM)- band at 914 MHz is considered. Challenges imposed by the communication link, namely the dynamic power range of received satellite signal, time-varying Doppler shift and a low signal-tointerference- and-noise ratio (SINR) regime are tackled with a cyclostationary approach. It is demonstrated that cyclic feat...    »