盲源分离技术及其卫星通信抗干扰应用研究  

Blind Source Separation Technology and Its Anti-interference Application Research for Satellite Communication

作　　者：张旭[1] 李加洪 李雄飞[1] 樊宁波[1] 

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2017年第5期34-40,共7页Space Electronic Technology

基　　金：总装预研基金(9140A21060115HT05331)

摘　　要：日益增强的侦察干扰设备对目前卫星通信的抗干扰能力提出了空前挑战。针对传统扩频通信手段频谱效率低的问题,研究了一种面向抗干扰通信应用的盲源分离处理方法。基于通信信号与干扰信号相互独立的假设条件,利用线性无记忆接收模型从混合信号中完成通信信号的有效提取,实现抗干扰处理。理论分析和仿真表明,盲源分离处理技术可实现干扰信号和我方通信信号的有效分离,能够在不降低系统频谱利用率的前提下,有效地提高系统的容扰容限。Unparalleled challenges have been brought to the anti-interference capability of the military communication since the equipment applied for investigation and is getting stronger and more powerful. To settle the problem of low spectrum efficiency caused by conventional direct spread spectrum communication method,a blind source separation（ BSS） technology oriented to anti-interference application was studied. Based on the assumed condition where the desired communication signal and signal were independent to each other,the anti-process was achieved by extracting the communication signal from the mixed signals using linear memory-less receiver model. The BBS technology is proven theoretically and practically to separate the desired signals and apart effectively and to improve the interference tolerance limitation efficaciously without decreasing the spectrum efficiency of the system.

关 键 词：抗干扰 盲源分离 信号处理 

分 类 号：V474[航空宇航科学与技术—飞行器设计]