陶震.基于导向矢量失配估计的鲁棒波束域自适应波束形成算法[J].国外电子测量技术,2017,36(7):23-26
基于导向矢量失配估计的鲁棒波束域自适应波束形成算法
Robust adaptive beamforming based on steering vector mismatch estimation
  
DOI:
中文关键词:  自适应波束形成  导向矢量失配  参数估计
英文关键词:ADBF  steering vector mismatching  parameter estimation
基金项目:
作者单位
陶震 河海大学计算机与信息学院 南京 21110 
AuthorInstitution
Tao Zhen College of Computer & Information Engineering,Hohai University, Nanjing 211100, China 
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中文摘要:
      针对目标导向矢量与波束指向失配导致自适应波束形成输出信干噪比下降问题,研究了一种基于导向矢量失配估计的鲁棒波束域自适应波束形成算法。该算法首先在信号与噪声子空间内,基于阵列主瓣宽度自适应迭代估计待检测目标导向矢量的失配误差,进而基于目标估计导向矢量计算波束域ADBF权值。仿真实验表明,算法在较低信干噪比条件下即能准确估计目标真实导向矢量,进而避免ADBF由于导向矢量失配引起的输出信干噪比损失。鲁棒波束域ADBF算法收敛速度快,易于工程实施。
英文摘要:
      In this paper, to overcome the signal to interference plus noise ratio (SINR) performance degradation in the presence of large steering vector (SV) mismatches between beam pointing and actual steering vector, we propose a robust adaptive digital beamforming (ADBF) algorithm.The approach iteratively estimates the mismatch errors of actual steering vector based on main lobe width to calculate ADBF weight.Simulation results show that the proposed approach can accurately evaluate the steering vector and avoid the loss of output SINR caused by steering vector mismatch in ADBF.
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