Multiple-input multiple-output (MIMO) radar systems are popular for their ability to mitigate the target radar cross section fluctuations and null Doppler. However, MIMO radar fundamentally suffers from a notable signal-to-noise ratio (SNR) loss compared to an ideal phased-array (PA) radar. In order to overcome this drawback, a distributed MIMO radar scheme with joint optimal transmit and receive signal combining method is proposed in this work. In view of the optimality, the proposed scheme outperforms the most popular combining methods of MIMO radar addressed in the literature. Also, the proposed scheme performs same as the ideal PA radar in case of the nonfluctuating target. In case of fluctuating targets, the proposed scheme outperforms PA radar at high SNR.

中文翻译：

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联合最优发射与接收信号组合的分布式MIMO雷达

多输入多输出（MIMO）雷达系统因能够减轻目标雷达横截面波动和零多普勒干扰而广受欢迎。但是，与理想的相控阵（PA）雷达相比，MIMO雷达从根本上遭受明显的信噪比（SNR）损失。为了克服这个缺点，在这项工作中提出了一种具有联合最优发射和接收信号组合方法的分布式MIMO雷达方案。鉴于最优性，所提出的方案优于文献中提出的最流行的MIMO雷达组合方法。同样，在目标无波动的情况下，该方案的性能与理想的PA雷达相同。在目标波动的情况下，所提出的方案在高SNR情况下优于PA雷达。