现代电子技术2024，Vol.47Issue(1)：25-29,5.DOI:10.16652/j.issn.1004-373x.2024.01.005
一种基于改进NLMS的多雷达主瓣干扰抑制方法
Multi-radar main lobe interference suppression method based on improved NLMS algorithm
张二伟 1王久友 1汪敬东 1李永飞1
作者信息
- 1. 南京电子技术研究所, 江苏 南京 210039
- 折叠
摘要
Abstract
In the remote detection scenarios,the performance of single station anti-interference methods decreases severely due to the small angle gap between missile-borne main lobe and target.Multiple radars can effectively ″distinguish″ targets and interference by reasonable station arrangement,which is considered to be an effective way to suppress main lobe interference.In response to the common problem of slow convergence speed in current multi-radar anti main lobe interference methods,a multi-radar anti main lobe interference method based on improved normalized least mean square(NLMS)is proposed,and its application conditions are given by theoretical derivation.In this method,fast convergence is achieved by defining a dissipation factor to achieve adaptive control of step size.Simulation results show that the method has significant advantages in convergence speed and mean square error(MSE)after convergence.The performance of this method was further verified in field experiments.Under the premise of meeting the station layout conditions and having an interference-to-noise ratio greater than or equal to 30 dB,its signal-to-noise ratio improvement can reach over 19 dB,which has high application value.关键词
多雷达/主瓣干扰/干扰对消/波达方向/改进NLMS算法/时延差/信噪比Key words
multi-radar/main lobe interference/interference canceling/DOA/improved NLMS algorithm/delay difference/signal-to-noise ratio分类
电子信息工程引用本文复制引用
张二伟,王久友,汪敬东,李永飞..一种基于改进NLMS的多雷达主瓣干扰抑制方法[J].现代电子技术,2024,47(1):25-29,5.
