现代电子技术Issue(17)：9-11,14,4.
强直达波干扰下目标特征快速提取方法研究
Fast extraction method of target characteristics in strong direct path wave interference
李富强 1郑宝周 1张益维 1豆根生1
作者信息
- 1. 河南农业大学 理学院，河南 郑州 450002
- 折叠
摘要
Abstract
An adaptive direct path wave interference suppression system based on variable step least mean square algorithm is designed to rebuild target echo signal in passive radar system. Simulation shows that,comparing with system based on con-stant step least mean square algorithm,the new system based on variable step least mean square algorithm can suppresses direct path wave interference effectively and rapidly. The fast Fourier transform is introduced into the system to reduce the calculated amount of cross ambiguity function. Simulation turns out that calculated amount has greatly been reduced. In order to estimate Doppler frequency shift and time delay patameters of echo signal correctly,the coordinates corresponding to maximum value of cross ambiguity function was calculated with fast Fourier transform. The simulation proved the correctness of the two estimated parameters.关键词
无源雷达/调频广播/变步长最小均方/直达波抑制/快速傅里叶变换Key words
passive radar/frequency modulation broadcast/variable step least mean square/direct path wave interference suppression/fast Fourier transform分类
信息技术与安全科学引用本文复制引用
李富强,郑宝周,张益维,豆根生..强直达波干扰下目标特征快速提取方法研究[J].现代电子技术,2013,(17):9-11,14,4.
