基于多普勒小波变换的脱靶量参数提取方法

研究了脱靶量测量系统中靶弹的相对运动速度、脱靶量、脱靶时刻等参数的提取方法. 根据接收到的雷达目标回波信号的多普勒频率特性,提出用4参数基函数的时频信号表示法,从而引出多普勒小波变换的概念. 通过匹配追踪算法寻找与回波信号最匹配的基函数来确定脱靶量参数. 实验结果表明,该方法有效地估计出了脱靶量参数,且比其它方法更简单准确.

Method of Missile Miss-Distance Parameters Based on Dopplerlet Transform

The extracting method of the relative velocity,the miss distance and the miss time parameters of the target in miss-distance measurement system is investigated.The four-parameter basis functions decomposition of time-frequency signal representation is presented based on the characteristics of Doppler frequency of the radar echoes,thereby dopplerlet transform is introduced.Miss distance parameters are estimated by matching pursuit algorithm to search the basis function which best matches the echo signal.The experimental results have shown that the proposed method is effective for the estimation of miss-distance parameters and is simpler and more exact than others.