考虑互耦修正的机会阵雷达波束方向图综合优化

机会阵雷达大量天线单元在空间随机分布，波束方向图综合时考虑阵元间的互耦影响十分必要。该文基于子阵思想，提出交叉划分子阵，利用子阵的互阻抗矩阵构建任意阵的互阻抗矩阵，并结合自适应算法实现了互耦情况下的机会阵雷达的波束综合优化。该方法利用矩量法计算子阵的广义互阻抗矩阵，应用最大输出信噪比准则，在方向图区域施加干扰信号自适应地调整阵因子，综合了非均匀偶极子线阵和面阵，结果与FEKO软件仿真结果吻合良好。

Beam Pattern Synthesis Optimization for Opportunistic Array Radar with Mutual Coupling

It is necessary to take mutual coupling of arrays into account in the research of array pattern synthesis for Opportunistic Array Radar (OAR) with a large number of antenna elements randomly distributed in the space. Active element patterns of a large array are constructed from those of a small array. In this paper, based on the idea of the sub-array, the large array is divided into across some sub-arrays, which can include the same elements. Building the mutual impedance matrix?of?large arbitrary array with the mutual impedance matrix?of the sub-array and combining with adaptive algorithm to realize the beam pattern synthesis optimization for OAR. The method of moment is used to calculate the generalized mutual impedance matrix of sub-arrays in this method. Last, based on maxim output signal-to-noise rate criteria, adding imaginary jammers into angle domain to adaptively change weights of the array factors for synthesizing patterns. An uniform linear array and a plane array are synthesized with the method. Calculated results agree with that with FEKO Software Simulation.