用于高动态GPS接收机的微分约束最小功率抗干扰方法  

Power minimization with derivative constraints for high dynamic GPS interference suppression

作　　者：吴仁彪[1,2] 卢丹[3] 李婵[1] 

机构地区：[1]中国民航大学智能信号与图像处理天津市重点实验室,天津300300 [2]深圳大学ATR国防科技重点实验室,深圳518060 [3]西安电子科技大学雷达信号处理国防重点实验室,西安710071

出　　处：《中国科学：信息科学》2011年第8期968-977,共10页Scientia Sinica(Informationis)

基　　金：国家自然科学基金;民航总局科技基金(批准号:MHRD0606);深圳大学ATR国防科技重点实验室开放课题资助项目

摘　　要：本文提出了一种基于微分约束最小功率法的高动态全球定位系统(GPS)接收机的自适应抗干扰方法.该方法对最小功率法在干扰的来向上加微分约束,能够加宽天线波束在干扰来向上形成零陷的宽度,用以应对高动态环境中干扰波达方向随时间的快速变化.和常规的基于微分约束的加宽零陷方法相比,本文方法不需要知道或估计信号和干扰来向信息.本文不仅在空域探讨了该方法,还将该方法推广到空时二维自适应处理来抑制宽带色散多径干扰.仿真结果证明了该方法的有效性.In this paper,a novel adaptive interference suppression algorithm is proposed for high dynamic GPS （global positioning system） receiver.The new method incorporates derivative constraints on the interference DOA （direction of arrival） into power minimization approach,which could broaden the width of nulls in the interferences directions and adapt to the rapid change of the interference directions.Compared with the traditional wide nulling algorithm based on the derivative constraints,the new method does not have to know or estimate the DOAs of the desired signal and the interference.The new method is firstly discussed in the context of spatial processing,and then extended to space-time adaptive processing to mitigate wideband diffusive multipath interference.Effectiveness of the new method is verified via simulation examples.

关 键 词：GPS 干扰抑制 自适应阵列 空时自适应处理 高动态GPS接收机 

分 类 号：TN967.1[电子电信—信号与信息处理]