关键词: 十字阵, 幅相误差, 多重信号分类法, 波达方向估计, 阵列信号处理

Abstract: Aimed at the widespread disturbance problem of amplitude and phase errors in practical application, combined with DOA estimation algorithm of the subspace class and based on a uniform cross array, a kind of algorithm to correct amplitude and phase errors is proposed. Uniform cross array can decompose into two uniform linear arrays which are mutually perpendicular. Amplitude and phase errors are preliminarily estimated according to the structural features of the uniform circular array covariance matrix, and the DOA also is calculated; the more accurate estimation is obtained through the iterative method. Relatively, the self-correction method is easy to achieve in that it requires no initial parameters. The simulation results manifest that the algorithm assumes good effects on error correction and is able to accurately estimate the azimuth and the amplitude and phase error value.

Key words: cross array, amplitude and phase errors, Multiple Signal Classification（MUSIC）, Direction Of Arrival（DOA） estimation, array signal processing