Joint transmit-receive subarray synthesis optimization for hybrid MIMO phased-array radar

摘要

The hybrid multiple-input multiple-output (MIMO) phased-array radar has become a hot research topic in recent years, where subarray optimization is important to obtain better system performance. In this paper, the transmit and receive subarray optimization technique for the hybrid MIMO phased-array radar is studied in ground moving target indication (GMTI) and airborne moving target indication (AMTI) modes for airborne radar, in which we focus on clutter mitigation performance rather than traditional angle estimation. An efficient joint transmit-receive subarray synthesis optimization (JTRSSO) method is proposed by means of adaptively adjusting the level of correlation between transmit waveforms and receive subarray configuration aiming at maximizing output signal-to-clutter-plus-noise ratio (SCNR). The simulation results show that the proposed method results in improved performance of clutter suppression and minimum detectable velocity (MDV) compared with the conventional uniform MIMO phased-array radar.