A Sub-array MIMO Radar Waveform Design with Wide Pulse Compression Main-lobe

Existing multiple-input multiple-output radar wave-form optimization works focus on full-digital radar, which is only a small part of existing radar system. Sub-array MIMO radar, in which sub-array antennas operate in the phased-array mode and different sub-array transmit differen waveforms, is more practical in some real applications. This paper studies a sub-array MIMO radar waveform optimization method. A waveform optimization criterion is presented to suppresses range compression sidelobes, mutual correlation sidelobes for differernt spatial regions, and the mismatch from a desired transmit beampattern. The sequential quadratic programming (SQP) algorithm is used to solve the optimization problem. Numerical results indicate that this method can efficiently control the distribution of signal energy in space and to suppress auto and mutual correlation sidelobes of angular waveforms.