利用模拟退火算法校正阵列天线通道失配

基于特征值分解的高分辨率DOA估计MUSIC算法，在理想情况下性能很好，但是系统误差会严重影响其性能，使其分辨率下降。文章基于子空间基本原理，提出一种利用模拟退火算法精确估计通道增益的方法。该方法的优点是只需要一个辅助信号源，算法稳健性较好，并且适用于任意形式的天线阵。大量的计算机模拟结果证实了这种方法的有效性。

Calibration of Channel Mismatch of Array Antenna Based on Simulated Annealing Algorithm

The high-resolution eigenstructure-based DOA estimation methods, such as MUSIC algorithm, have an excellent performance in ideal cases. Their performance is susceptible to noise perturbation and array error and degrades significantly when array has error. Based on subspace principle, a calibration method is put forward making use of simulated annealing algorithm. The merits of this method are that only one signal is needed to estimate coefficient and it can be applied to any pattern of arrays. A great deal of computer experiments prove the efficacy of this method.