功率反演算法的FPGA实现与仿真  

FPGA Implementation and Simulation Based on Power Inversion Algorithm

作　　者：韩应都[1] 蒲一平[1] 韩方景[2] 

机构地区：[1]中国空空导弹研究院,河南洛阳471009 [2]国防科技大学电子科学与工程学院,长沙410073

出　　处：《航空兵器》2013年第2期20-24,共5页Aero Weaponry

基　　金：航空科学基金(20060112005)

摘　　要：功率反演算法可以通过实时调整天线阵列的权值,获得对不同方向的干扰信号高的抑制比,在强干扰情况下获取微弱的有用信号。本文进行了功率反演算法FPGA实现的仿真分析,基于四元天线阵研究了阵列的抗干扰性能和计算步长、仿真时间等因素对算法收敛和性能的影响,结果表明在对抗强干扰时抗干扰效果显著,能显著提高信干比,且算法易于工程实现。The algorithm based on the power inversion （PI） is capable of adjusting the weights of the antenna array in real time to respond and improve received signals coming from the desired directions and at the same time to highly suppress the jammers coming from the other directions, to gain the weak useful signs in the strong jammers, the FPGA is designed and based on 4-arrays , the performance of the algo- rithm and the influence of the step length and calculation time is studied. It indicates that this structure can get a better effect and better signal-to-jam ratio （SJR） in restraining the interference, and the power inversion algorithm is implemented simply and easily.

关 键 词：自适应天线 功率反演 GPS抗干扰 

分 类 号：TN91[电子电信—通信与信息系统]