基于MVDR算法的阵元失效仿真分析研究

Analysis of Array Element Failure Simulation Based on MVDR Algorithm

摘要: 阵元失效会破坏均匀直线阵的幅相分布，导致波束旁瓣级升高，主瓣波束展宽等问题，影响MVDR算法方位估计的有效性和可靠性。针对这一问题，本文从阵列连续多个阵元失效的角度出发，就阵元失效对典型的MVDR算法的影响进行仿真分析，利用主瓣宽度以及旁瓣高度两个指标，得出不同失效阵元数及不同失效阵元位置对MVDR算法的影响，在此基础之上，探索阵元失效对算法影响的规律，为阵元失效问题提供参考。

Abstract: The failure of the array element will destroy the amplitude and phase distribution of the uniform linear array, causing the beam sidelobe level to rise, the main lobe beam broadening and other is-sues, affecting the validity and reliability of the MVDR algorithm’s position estimation. In order to solve this problem, this paper starts from the perspective of continuous failure of multiple array elements, simulates and analyzes the effects of array element failure on the typical MVDR algorithm, and uses the two main indicators: the width of the main lobe and the height of the side lobe to obtain different failure modes. Based on the influence of the arity and the position of different failure elements on the MVDR algorithm, based on this, the law of the failure of the array element to the algorithm is explored to provide reference for the failure of the array element.