摘要
脉冲重频是雷达信号的重要特征之一,能否充分利用雷达信号的脉冲重频信息,直接影响雷达信号分选质量。采用由CPU给出的分选结果,包括最后一个用于分选的脉冲的到达时间,装订现场可编程门阵列(FPGA)关联比较器,利用雷达信号到达时间的相参性,将前后脉冲的到达时间差取余,根据余数判断两脉冲的相参关系,快速建立跟踪,由硬件实现对关联信号的脉冲重频跟踪,提高了速度,实现了信号跟踪的稳定性。
Pulse repetition frequency（PRF）is one of important features of radar signal,and whether the radar signal PRF information can be used adequately will directly influence the quality of radar signal sorting.This paper uses the sorting results given by CPU,which include the time of arrival（TOA）of the last pulse sorted,to bind the parameters of correlation comparator constructed by field programmable gate array（FPGA）,uses the coherent relations of TOA of radar signals to get the remainder to TOA intervals of adjacent pulses,judges the coherent relationship of two pulses according to the remainder,constructs tracking rapidly,performs PRF tracking to correlative signals by hardware,which improves the velocity and realizes the stability of signal tracking.
出处
《舰船电子对抗》
2016年第2期67-70,共4页
Shipboard Electronic Countermeasure
关键词
重频跟踪
雷达信号分选
相参
pulse repetition frequency tracking
radar signal sorting
coherent
