色噪声背景下阵列天线位置误差自校正算法  

Antenna array self-calibration algorithm with sensor position uncertainties in unknown colored noise fields

作　　者：陈德莉[1] 卢焕章[1] 王鸿兴[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：《系统工程与电子技术》2007年第10期1619-1623,共5页Systems Engineering and Electronics

摘　　要：针对色噪声环境下的阵列天线位置误差问题,提出了一种自校正算法。该算法首先估计色噪声相关矩阵,同时对阵元位置和信源DOA作初步估计;进而在此基础上进行迭代过程,在进一步校正阵元位置偏差的同时,得到更精确的DOA估计值。理论分析和仿真结果均表明在低信噪比色噪声情况下该算法的有效性。A self-calibration algorithm that can calibrate the sensor position in nonuniform noise fields is proposed. First, the colored noise covariance matrix is estimated, and at the same time, the primary estimations of the sensor positions and DOA are achieved. Then, base on that, the iterative procedure is executed, which can calibrate the sensor position more precisely and get the more exact estimation of DOA simultaneously. Theoretical analysis and simulation results indicate this algorithm＇s validity, with low SNR and colored noise environment.

关 键 词：波达方向 色噪声 阵元位置校正 阵元天线 

分 类 号：TN95[电子电信—信号与信息处理]