基于导向矢量实时校准的跳频波束形成算法  

A Frequency-Hopping Beamforming Algorithm Based on Steering Vector Real-time Calibration

作　　者：乔成林[1] 全厚德[1] 崔佩璋[1] 高飞[2] 

机构地区：[1]军械工程学院信息工程系,河北石家庄050003 [2]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《探测与控制学报》2015年第1期50-57,共8页Journal of Detection & Control

基　　金：军械工程学院科学研究基金项目资助(YJJXM11014)

摘　　要：针对现有跳频系统中波束形成算法稳健性差的缺陷,结合快速跟踪式干扰的特点,提出基于导向矢量实时校准的跳频波束形成算法。该算法分两步实时校准导向矢量,快速跟踪式干扰到达前,建立正定矩阵,根据子空间理论,构建代价函数,采用最陡下降法实时校准期望信号导向矢量。快速跟踪式干扰到达后,通过变换去除期望信号,采用相同算法实时校准快速跟踪式干扰合成导向矢量。仿真结果表明,该算法具有较好的稳健性和实时性,适用于任意结构跳频系统,可以在较大导向矢量误差范围内仍保持良好性能。Aiming at the problem of poor robustness of beamforming algorithms in the existing frequencyhopping system,combined with the characteristic of fast follower jamming,a beamforming algorithm for frequency-hopping based on real-time calibration for steering vector was proposed.The steering vectors were realtime calibrated with two steps in the algorithm.Firstly,apositive matrix was constructed before the fast follower jamming arriving.Then the cost function was defined by subspace theory.And the steering vector of the desired signal was real-time calibrated by using the steepest descent algorithm.Secondly,the desired signal was removed by transformation after the fast follower jamming arriving.Then the synthetic steering vector of the fast follower jamming was real-time calibrated by using the same algorithm.In addition,the algorithm was applicable to arbitrary array for frequency-hopping system.Simulation results demonstrated that the proposed scheme could provide better robust and real-time capabilities.And it could perform well in a large range of steering vector errors.

关 键 词：跳频 波束形成 稳健性 实时校准 导向矢量 

分 类 号：TN914[电子电信—通信与信息系统] TN911[电子电信—信息与通信工程]