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A Calibration Algorithm for Amplitude and Phase Errors in Uniform Linear Array
Author(s): WANG Ding, YE Guo-hua, LI Chang-sheng, WU Ying
Pages: 289-
295,300
Year: 2009
Issue:
4
Journal: Radar Science and Technology
Keyword: 测向; 阵列校正; 均匀线阵; 幅相误差; Toeplitz矩阵;
Abstract: 阵列幅相误差会严重影响MUSIC算法的测向性能,为此基于均匀线阵,给出了一种新的幅相误差校正算法.首先根据协方差矩阵的关系式构造了一种二次代价函数,然后利用理想条件下均匀线阵协方差矩阵具有Toeplitz结构的性质,通过交替迭代的方法对此二次代价函数进行优化求解,从而估计出了幅相误差和理想条件下的协方差矩阵,最后利用MUSIC算法即可估计出信源方位.计算机仿真结果验证了文中的算法是有效的,并且具有较高的参数估计精度.
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