针对平面阵列雷达群目标检测问题,以矩形阵为例,详细分析方位向和俯仰向复单脉冲比虚部的统计特性;建立平面阵列雷达群目标检测模型,根据恒虚警检测原理推导复单脉冲比虚部的椭圆判决域,并利用复单脉冲比实部辅助判决,综合提出基于复单脉冲比的平面阵列雷达群目标检测算法.针对双目标情形进行仿真实验,结果表明:在较高信噪比、较大角度间隔以及幅度相当且相位差较大的条件下算法能够有效检测群目标.%For the detection of unresolved targets on the planar array radar, a rectangle array was taken as example to analyze the statistical distribution of imaginary of complex monopulse ratios in azimuth and elevation firstly.The detection model was given for planar array and an ellipse decision domain for the imaginary part of the monopulse ratios was set according to the constant false alarm theory.Besides, the real part of the monopulse ratios was used to assist the decision.By combining the two decisions, the detection algorithm for unresolved targets based on complex monopulse ratio was proposed.Simulation results based on the rectangle array for two targets demonstrate that the proposed algorithm performs well in the conditions of high signal to noise ratio, wide angle separate and suitable complex amplitude ratio.
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