相控阵MIMO雷达最佳子阵划分

研究了相控阵多输入多输出（MIMO）雷达发射阵列采用满重叠划分方式时的波束形成，将收发波束方向图表示为单个子阵的发射波束方向图、波形分集方向图和接收波束方向图乘积的形式，并分析其最大探测距离、主瓣宽度、副瓣性能以及输出信号与干扰加噪声比性能。理论及仿真结果表明：与同等配置的相控阵雷达和MIMO雷达相比，相控阵MIMO雷达拥有更好的副瓣抑制性能以及抗干扰能力。并通过研究子阵数目对雷达性能的影响，得到了不同准则下的最佳子阵数目选取方案。

The Optimal Sub-array Number for Phased MIMO Radar

The transmit array of phased MIMO radar is partitioned into a number of sub-arrays which are fully-overlapped. The phased MIMO radar beam pattern is expressed as the product of transmit beam pattern, waveform diversity beam pattern and receive beam pattern. The beam forming of phased MIMO radar is mainly studied, through analyzing the maximum radar range, highest sidelobe, width of mainlobe and achievable output signal-to-interference-plus-noise ratios. Compared with phased array radar and MIMO radar of the same configuration, theory and simulation results show that phased MIMO radar has better performance on sidelobe suppression and anti-interference. Finally, the optimal sub-array number under different conditions is obtained.