一种基于动态门限与LMS算法相结合的多径干扰抑制算法  

A Multipath Interference Suppression Algorithm Based on Dynamic Threshold Combined with LMS Algorithm

作　　者：郭立民[1] 于致博 GUO Limin;YU Zhibo(Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学,黑龙江哈尔滨150001

出　　处：《舰船电子对抗》2024年第2期52-56,92,共6页Shipboard Electronic Countermeasure

摘　　要：在船舰行驶过程中,信号的传输在岛屿反射与海面散射影响下易产生多径效应,使船舰的无线地空数据接收系统受到影响。为提高接收机的接收性能,首先完成了多径信道的建模,搭建了三径信道模型,并在此模型下,将动态门限法与最小均方(LMS)算法进行改进结合,并用此算法完成了信号处理的研究与仿真。仿真结果表明,所提算法优化方案可以提高在此种情况下信号接收系统的准确性。During the process of ship driving,the transmission of signals is easy to generate multipath effect under the influence of island reflection and sea surface scattering,which affects the ships wireless ground-air data receiving system.In order to improve the reception performance of receivers,this paper first completes the modeling of multipath channels,builds a three-path channel model,and combines the dynamic threshold method with the least mean square(LMS)algorithm under this model,and uses this algorithm to complete the research and simulation of signal processing.The simulation results show that the optimization scheme of the algorithm proposed in this paper can improve the accuracy of signal receiving system under such circumstance.

关 键 词：无线数据链 多径信道 干扰抑制 最小均方算法 动态门限 

分 类 号：TN973.21[电子电信—信号与信息处理] TN911.7[电子电信—信息与通信工程]