基于导向矢量实时校准的稳健波束形成算法  

A Robust Beamforming Algorithm Based on Steering Vector Real-time Calibration

作　　者：乔成林[1] 全厚德[1] 崔佩璋[1] 郑保明 

机构地区：[1]军械工程学院信息工程系,河北石家庄050003 [2]总装备部通用装备保障部,北京110000

出　　处：《探测与控制学报》2014年第5期86-90,共5页Journal of Detection & Control

摘　　要：针对已有稳健波束形成算法实时性差、收敛速度慢、输出信干噪比(SINR)低的缺陷,提出基于导向矢量实时校准的稳健波束形成算法。该算法首先构造一个正定矩阵,然后根据真实期望信号正交于噪声子空间的原理,建立代价函数,采用最陡下降法自适应迭代求解权矢量,最后将权矢量投影到信号干扰子空间。仿真验证表明该算法实时性好、收敛速度快、输出SINR高,在较大导向矢量误差范围内仍能保持良好性能,具有较高的实际应用价值。Aiming at the problem of the existing robust beamforming algorithms with poor real-time capability, slow convergence speed and low output signal to Interference and noise ratio （SINR）,a robust beamforming al-gorithm based on real-time calibration for steering vector was proposed.A positive matrix was constructed first-ly,then the cost function was defined by utilizing the orthogonality between the noise subspace and the real de-sired signal.And the weight vector was iterative solved by using the steepest descent algorithm.Finally,the weight vector was proj ected onto the signal and interference subspace.Simulation results showed that the pro-posed algorithm provided good real-time capability,fast convergence speed,high output SINR and could per-form well in a large range of steering vector errors.

关 键 词：波束形成 导向矢量 实时校准 稳健性 

分 类 号：TN911[电子电信—通信与信息系统]