摘要
介绍了外照射源目标探测的作用和研究的必要性。重点分析了自适应LMS信号滤波处理方法和在直达波和多径干扰等杂波抑制中的应用。对自适应LMS滤波算法进行改进,即对归一化LMS(normalized LMS)算法进行推导和分析,提高了自适应滤波的收敛速度,对目标中的杂波起到更好的抑制作用。并在试验中对非归一化滤波、归一化滤波以及不同滤波步长μ进行了分析和比较。最后在试验结果中得到了30 dB的对消增益并获得了目标信号。
The feature of passive detection and the necessity to research it are described first. The technology to suppress direct wave and multipath interference is studied, and adaptive filter processing algorithm is analyzed and improved so as to increase the convergence of LMS and can suppress direct wave and multipath interference better. In experimentation the algorithrns of no-normalized LMN, normalized LMS and different step of LMS are analyzed, and the cancellation gain （30 dB） is obtained. After processing the collected large amount of data, target signal is found.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2006年第2期202-204,共3页
Systems Engineering and Electronics
关键词
自适应滤波
杂波抑制
无源探测
adaptive filter
clutter suppression
passive detection
作者简介
许德刚（1973-），男，工程师，主要研究方向为雷达信号处理。E-mail：dgxu@163.com
