基于单次快拍的自适应天线阵互耦效应分析与校正

本文基于天线阵列的单次快拍数据,分析和校正了自适应天线的单元互耦效应.文中首先阐述了基于单次快拍数据的信号处理方法,介绍了构造权矢量法方程的方法,给出了系统恢复期望信号的表达式和形成自适应方向图的公式.采用矩量法互耦分析模型和"前向"方法,分析互耦对系统性能的影响.提出校正互耦的方法,给出了具体的计算方法和简洁的表达式.最后分别模拟了在强、弱干扰的环境下,互耦对系统分辨率和输出方向图的影响,并验证了本文方法校正互耦的效果.

Analysis and Compensation of the Effect of Mutual Coupling on the Performance of Adaptive Arrays with Single Snapshot Data

Based on a single snapshot data,the effect of mutual coupling on the performance of adaptive arrays is studied.Firstly,the signal processing method based on a single snapshot data is demonstrated,the method of constructing the equations for solving the weight is introduced,and the expression for the reconstructed desire signal and the formula for the adaptive pattern are given.Then,applying the MOM analytic model and the "forward" method,the effect of mutual coupling between elements is analyzed.The method of mutual coupling compensation in adaptive arrays is proposed.Finally,the effect of mutual coupling on the resolution and the output pattern of adaptive system and the compensation results of the given methods in this paper are simulated with existence of strong or weak interference.