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总览 评价 马 骏 , 吴晓非 * ( 北京邮电大学信息与通信工程学院,北京 100876; ) 摘要: 介绍了阵列信号抗干扰处理中常采用的功率倒置(PI)算法的基本原理,同时指出功率倒置算法在干扰方向形成深度零陷的同时,在阵列方向图其它区域也会形成不同程度的
马 骏, 吴晓非*
(
北京邮电大学信息与通信工程学院,北京 100876; )
摘要:
介绍了阵列信号抗干扰处理中常采用的功率倒置(PI)算法的基本原理,同时指出功率倒置算法在干扰方向形成深度零陷的同时,在阵列方向图其它区域也会形成不同程度的衰落,导致该入射方向卫星信号衰减严重,信噪比降低。本文在功率倒置算法的基础上提出了一种通过自适应调整阵列的权值向量,优化阵列输出信噪比的设计方案。仿真分析表明,该设计方案能提高阵列输出信号的信噪比,优化阵列性能。
关键词:
阵列信号处理;功率倒置;GNSS抗干扰
Ma Jun, Wu Xiaofei*
(
Beijing University of Posts and Telecommunications, Beijing 100876; )
Abstract:
This paper Introduced the principle of power invertion algorithm usually used in anti-jamming array signal processing field. Power inversion algorithm can form null in the interference direction, but sometimes cause signal attenuation of different degrees in other directions. This paper proposed a kind of effective method which was based on the power invertion algorithm, and could improve the SNR of the array output through a method of automaticly switching the weight vector. Simulation results show that the proposed method can increase the array output SNR, improve the array performance .
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