基于PRI变换的混叠LFM雷达信号分选

发布时间：2018-02-28 07:01

本文关键词： 混叠 LFM雷达信号小波变换丢失脉冲 PRI变换　出处：《雷达科学与技术》2016年06期 　论文类型：期刊论文

【摘要】：针对脉冲混叠造成脉冲信息丢失而影响雷达分选效果的问题,提出一种恢复丢失的脉冲信息、完成LFM雷达信号分选的算法。首先,对接收LFM雷达脉冲信号进行小波变换,采用等高线截取法实现时频矩阵的二值化;其次,检测和估计出脉冲信号的到达时间和因时域混叠而丢失的脉冲信号到达时间;最后,基于PRI变换法实现LFM雷达信号的分选。仿真实验结果表明,提出的算法通过恢复丢失脉冲的信息,能够检测出每部LFM雷达的PRI值,并且估计误差基本维持在1%左右。
[Abstract]:In order to solve the problem that pulse information loss caused by pulse aliasing affects radar sorting effect, a method of recovering lost pulse information and completing LFM radar signal sorting is proposed. Firstly, wavelet transform is applied to receive LFM radar pulse signal. The method of contour line interception is used to realize the binarization of time-frequency matrix. Secondly, the arrival time of pulse signal and the time of arrival of pulse signal lost due to time domain aliasing are detected and estimated. Finally, The simulation results show that the proposed algorithm can detect the PRI value of each LFM radar by restoring the information of the lost pulse, and the estimation error is about 1%.
【作者单位】：中国电子科技集团公司第五十一研究所;上海大学通信与信息工程学院;
【分类号】：TN957.51

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