GPS接收机联合空时抗干扰方法  

Joint space-time anti-jammer processing for GPS receiver

作　　者：孙晓昶[1] 皇甫堪[1] 程翥[1] 陈强 

机构地区：[1]国防科技大学电子科学与工程学院信号处理研究室,湖南长沙410073 [2]中国电子系统设备工程公司,北京100039

出　　处：《通信学报》2003年第9期93-102,共10页Journal on Communications

摘　　要：传统的阵列抗干扰技术应用于GPS接收机抗干扰前端的主要问题是自由度有限、对多径干扰处理困难,因而无法应付恶劣场景和主动干扰。采用本文新颖之处是采用联合空时处理技术,在不增加阵元的情况下,能使阵的自由度大大增加,从而使抗干扰能力有质的提高。本文研究GPS接收机干扰场景的联合空时处理方法,针对空时处理使计算量显著增加这一致命缺陷,讨论降秩算法的多级嵌套维纳滤波实现,仿真结果证实了算法的抗干扰能力。Need of freedom degrees and incapability under multipath secenarios are the main problems of the traditional array based anti-jammer preprocessor at GPS receiver front end. The applying of space-time processing so greatly increases the freedoms of degree as to enhance the anti-jammer capability remarkably. An anti-jammer space-time processor under GPS jamming scenario is pursued and a rank reduced algorithm which is the critical problem in space-time processing is discussed in this thesis. The realization of the mutistage nested winner filter is intensively discussed and simulations proved its excellent performance.

关 键 词：空时处理 降秩处理 多级嵌套维纳滤波 GPS 干扰 最小方差准则 

分 类 号：TN911.7[电子电信—通信与信息系统] TN957.52[电子电信—信息与通信工程]