变换域窄带干扰检测算法研究

基于数据链的应用背景,在直接序列扩频系统下,研究了不同变换域窄带干扰检测算法的基本原理,包括基于一、二阶矩的门限算法、K谱线法、条件中值滤波法及连续均值剔除算法。通过仿真对比了不同算法的干扰检测抑制性能。仿真结果表明,在几种干扰检测算法中,连续均值剔除算法对于典型窄带干扰的检测能力最优,能够实现干扰的快速实时检测处理。

Research of narrowband interference detection algorithm in transform domain

Based on the application of data link,the basic principle of narrowband interference detection algorithms in dif-ferent transform domain is researched in DSSS system,in which threshold algorithm based on first or second moment, K bins al-gorithm,conditional median filtering algorithm and consecutive mean excision（CME）algorithm are included. The interference detection and suppression performances of the different algorithms are compared according to the simulation results. The simula-tion results show that CME algorithm has the best detection performance to typical narrowband interference among several inter-ference detection algorithms. It can achieve real-time detection of interference.