MISO radar beamforming demonstration

Abstract

Coherent multiple-input multiple-output (MIMO) radar is characterized by having a transmit antenna array and a receive antenna array located in a pseudo-monostatic configuration such that desired target returns from the far-field are coherent. Each element (or subarray) of the transmit array radiates an independent, ideally orthogonal, waveform. Such a radar offers the ability to digitally form beams, possibly adaptively, on both transmit and receive within the receive signal processor. The fundamental advantages of MIMO radar over modern single-input multiple-output (SIMO) radar can be demonstrated with a multiple-input single-output (MISO) radar. A MISO radar testbed with up to four transmit channels and a single receiver was built to evaluate the various classes of MIMO waveforms. Results of these tests are presented.