Sub-Nyquist pulse Doppler MIMO radar

David Cohen, Deborah Cohen, Yonina C. Eldar, Alexander M. Haimovich

Abstract: Pulse Doppler multiple input multiple output (MIMO) radar allows to simultaneously detect targets' range, azimuth and velocity. Achieving high resolution requires a large number of transmit and receive antennas, as well as high sampling rates leading to a torrent of samples. Overcoming the rate bottleneck, sub-Nyquist sampling methods have been proposed that break the link between single antenna radar signal bandwidth and range resolution. In this work, we present a sub-Nyquist MIMO radar (SUMMeR) system that extends these methods to a multiple antenna setting. We apply the Xampling framework both in time and space, thus reducing both the number of deployed antennas and samples per receiver, without degrading time and spatial resolution, as illustrated in the simulations.