This paper investigates the problem of mainlobe deceptive jammer suppression via joint transmit–receive design in a multiple-input multiple-output (MIMO) radar. At the design stage, a discrete element-pulse coding (DEPC) phase is implemented in both the slow-time pulses and transmit array antennas. After decoding and compensation of the delayed pulses, the true and false targets can be identified in the joint transmit–receive (JTR) spatial frequency domain. Furthermore, to eliminate the false targets, a data-dependent beamforming technique is adopted, where an optimization problem is constructed to maximize the output signal-to-interference-plus-noise ratio (SINR) by optimizing the DEPC coefficients and the weight vector of the receive filter in an alternating way. Specifically, two methods, including the Single Jammer Suppression (SJS)-Alternating Direction Method of Multipliers (ADMM) and Multiple Jammers Suppression (MJS)-Gradient Descent (GD) methods are developed for the cases of a single jammer and multiple jammers, respectively. A series of numerical results are utilized to verify the effectiveness of the proposed methods for mainlobe deceptive jammer suppression.

中文翻译：

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采用联合发射-接收设计的 DEPC-MIMO 雷达进行主瓣欺骗性干扰抑制

本文通过多输入多输出（MIMO）雷达中的联合发射-接收设计研究主瓣欺骗性干扰机抑制问题。在设计阶段，在慢时脉冲和发射阵列天线中均实现了离散单元脉冲编码（DEPC）阶段。对延迟脉冲进行解码和补偿后，可以在联合发射-接收（JTR）空间频域中识别真假目标。此外，为了消除虚假目标，采用了数据相关波束形成技术，通过优化 DEPC 系数和权重向量，构造优化问题以最大化输出信号与干扰加噪声比（SINR）。以交替方式接收滤波器。具体来说，分别针对单干扰机和多干扰机的情况开发了两种方法，包括单干扰机抑制（SJS）-乘数交替方向法（ADMM）和多干扰机抑制（MJS）-梯度下降（GD）方法。一系列数值结果被用来验证所提出的主瓣欺骗性干扰抑制方法的有效性。