A Fast-Chirp MIMO Radar System Using Beat Frequency FDMA With Single-Sideband Modulation

In this paper, we investigate the feasibility of using a fast-chirp frequency-modulated continuous-wave radar system in order to realize frequency-division multiple-access multiple-input multiple-output. The frequency shifting is implemented by single-sideband modulation for unambiguous range enhancement. Furthermore, we apply a binary mask to separate transmit signals at the receivers instead of using a bandpass filter. Measurements accomplished using a prototype radar system with 3 transmit antennas and 4 receive antennas demonstrate the proposed approach.