无源雷达杂波抑制与相干检测的联合优化处理

The Joint-optimized Processing of Clutter Cancellation and Coherent Detection for Passive Radar

杂波抑制和相干检测是外辐射源雷达信号处理的两个关键环节,针对扩展相消批处理杂波对消算法和基于分段的多普勒谱分析的运动目标相干检测方法存在重复分块和冗余计算的问题,提出了扩展相消批处理算法与基于分段的多普勒谱分析方法的联合优化算法,推导了它们的数学原理,给出了分段数及滤波器阶数的设置方法。仿真结果表明,该方法在取得较好杂波抑制效果的同时,降低了系统整体的运算量。

Clutter cancellation and coherent detection are two key links of signal processing of passive radar.As for the duplicate block and redundancy calculation problems existing in the coherent detection method of mobile targets based on batch version of extensive cancellation algorithm(ECA-B)and segmented Doppler Spectrum analysis,the joint-optimized algorithm based on batch version of extensive cancellation algorithm(ECA-B)and segmented Doppler Spectrum analysis method is proposed,their mathematical principles are deduced.The setting method of the number of segments and filter order are proposed.The simulation results show that this approach reduces the overall computational burden of the system while achieving better clutter cancellation effects.