空间非平稳噪声环境下阵列通道幅相误差自校正算法  

Array Self-Calibration Algorithm with Sensor Gain/Phase Perturbations in the Presence of Spatially Nonstationary Noise Fields

作　　者：陈德莉[1] 卢焕章[1] 张聪[1] 

机构地区：[1]国防科技大学电子科学与工程学院ATR重点实验室,湖南长沙410073

出　　处：《信号处理》2008年第4期525-529,共5页Journal of Signal Processing

摘　　要：本文针对空间非平稳噪声环境下的阵列通道幅相误差问题提出一种自校正算法。该算法可以有效估计噪声相关矩阵,同时对通道幅相偏差和信源DOA作初步估计;进而在此基础上进行迭代过程,进一步校正通道幅相偏差的同时得到更精确的DOA估计值。理论分析和仿真结果均表明该算法的有效性。A self-calibration algorithm that can calibrate the sensor gain/phase error in spatially nonstationary noise is presented. The noise covariance matrix can be efficiently estimated by this algorithm, and at the same time, the primary estimations of the sensor gain, phase and DOA are achieved. Then, based on the primary estimations, the iterative procedure is executed which can calibrate the sensor gain/phase more precisely and get the more exact estimation of DOA simultaneously. The validity of this algorithm is confirmed by theoretical analysis and simulation results.

关 键 词：波达方向 阵列校正 非平稳噪声 通道幅相 

分 类 号：TN911.7[电子电信—通信与信息系统] TP273[电子电信—信息与通信工程]