Forward jamming mitigation using partially occupied DDMA-MIMO waveform

Abstract

This letter proposes a novel approach to suppress forward jamming from mainlobe using partially occupied Doppler division multiple access (DDMA) waveforms. The partially occupied DDMA mode indicates that the radar only transmits waveforms through part of the orthogonal Doppler channels. It is proved that the forward jamming yields a fake Doppler component in the blank Doppler channel, if the jammer works in saturation. Leveraging this feature, a jamming mitigation method in slow time is proposed and conduct numerical experiments to validate our method.