径向速度对匹配模板法识别LFM信号的影响

Effect of Radial Velocity on the Recognition of LFM Signals Based on Template Matching Method

推导了动目标的线性调频信号(LFM)匹配滤波器响应,得出其响应与径向速度有关。通过分析理想匹配输出结果,制定了LFM信号的匹配识别准则。在存在径向速度的情况下,通过对匹配输出性能参数的提取与分析,得出其对匹配模板法识别LFM信号带来的影响,并为消除影响提出了解决方案。

This paper analyzes in detail the response of the matching filter to the Linear Frequency Modulation （LFM） signals of a moving target. The result shows that the response is related to the moving target＇s radial velocity. The matching recognition rules of LFM signals are established based on the analysis of the ideal matching output. When the radial velocity exists, by extracting and analyzing the performance parameters of the matching output, the effect of the radial velocity on the recognition of LFM signals based on the template matching method can be learnt. A way to eliminate the effect is also put forward.