一种改进的动态关联信号分选算法

摘要

The signal processing of passive coherent location systems based on non-cooperative pulse radar illumination demands that the direct-path signal belonging to the special emitter should be selected from the contaminated pulses. An improved algorithm based on dynamic association signal sorting algorithm is proposed to solve the problem of radar pulse train deinterleaving. Both the PRI parameter and the adjacent pulse amplitude ratio parameter are introduced to select the true pulses after analyzing the real data. The result indicates that the algorithm can select the whole main lobe pulses and the given desired side lobe pulses. When setting dynamic PRI range parameter, the complicated mode PRF signals such as staggered PRI or jitter PRI can also be selected.%在基于脉冲制外辐射源的无源相干雷达系统中,直达波通道信号通常需要信号分选后才能与目标回波信号进行相参信号处理.为了从直达波通道互相交叠的信号中分选出特定辐射源的信号,提出了改进的动态关联信号分选算法.该算法在对实测信号特点分析后,指出利用脉冲重复频率和相邻脉冲幅度比这两个参数进行实测信号分选.信号分选结果表明:该算法能够完整分选出辐射源主瓣信号,也可以保证一定的辐射源副瓣信号分选成功率；同时动态设置脉冲重复频率容限亦可以完成参差重频、抖动重频等信号的分选工作.