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针对均匀圆阵存在一般阵列误差 (如阵元的幅相误差和安装位置误差等 )的情况 ,提出了多个信号的波达方向和多普勒频率估计方法。直接利用均匀圆阵的阵列流形 ,采用波达矩阵法估计各个信号的多普勒频率。由一般阵列误差的统计特性构造加权矩阵 ,采用加权总体最小二乘法估计各个信号的波达方向。此方法具有鲁棒性强等特点。计算机仿真证明了此方法的有效性
Aiming at the general array error (such as the amplitude and phase error of array element and the installation position error) of uniform circular array, the direction of arrival (DOA) and Doppler frequency estimation of multiple signals are proposed. The array manifold of uniformly circular array is directly used to estimate the Doppler frequency of each signal by using the wave matrix method. The weighting matrix is constructed from the statistical properties of the general array error, and the direction of arrival of each signal is estimated by weighted total least square method. This method is robust and so on. Computer simulation proves the effectiveness of this method