基于辅助阵元法的MUSIC算法

MUSIC Algorithm Based on Instrumental Sensors Method

阵列误差会使MUSIC算法的性能急剧下降.现今大多数校正算法都是用于校正方位无关的阵列误差.但实际中的阵列误差几乎都与信号方位有关.辅助阵元法是校正方位相关阵列误差的有效方法.首先论述了辅助阵元法与MUSIC算法相结合的算法,然后重点分析了信噪比和校正阵元的精度对算法性能的影响,同时提出了提高算法精度的方法,为实际应用提供参考.仿真实验验证了算法的有效性.

The performance of MUSIC algorithm will decline seriously by the array errors.Today,most array error calibration algorithms are used to calibrate direction-irrelevant array errors.However,array errors are almost direction related in practice.Instrumental Sensors Method is an effective algorithm for direction-relevant array error calibration.Firstly,this paper discusses the algorithm which combines Instrumental Sensors Method with MUSIC algorithm,and then analyses the impact of SNR and instrumental sensor accuracy on the algorithm.Meanwhile,this paper proposes methods to improve the algorithm accuracy,which provide a reference for practical applications.Simulations verify the efficiency of the algorithm.