功率倒置算法在北斗抗干扰天线系统中的应用

功率倒置算法在北斗抗干扰天线系统中的应用

内容简介：为解决北斗导航接收机干扰功率强、有效信号弱的不足，提出了一种基于功率倒置自适应算法的抗干扰设计方案。该方案以自适应天线系统为平台，采用FPGA处理器Virtex5芯片实现自适应算法，根据最小均方误差原则迭代计算功率倒置的最优权值并产生加权输出。测试结果显示：功率倒置算法在干扰形式、干扰方向未知的情况下能够有效抑制干扰，为北斗导航接收机提供最高50dB的抗干扰能力。

Abstract：To solve the problem that the desired signals of Compass navigation receiver are very weak while the jamming signals are much stronger, an anti-jamming method is proposed based on power inversion adaptive algorithm. This method is based on the platform of adaptive antenna system, implements the adaptive algorithm by Virtex-5, computes the optimal weights and the weighted output of power inversion using the minimum mean square error criterion. The results indicate that power inversion algorithm can effectively suppress interference without any information about jamming, and can provide the capability of anti-jamming at most 50 dB for Compass navigation receiver.

作者：仉智权, 朱畅, 冯起, 袁乃昌,

关键词：北斗导航接收机, 功率倒置, 自适应, FPGA, 抗干扰,