基于精确响应控制的子阵波束赋形算法

摘要

Phased arrays frequently adopt subarrays to reduce the number of channels.This paper works for the pattern synthesis on uniform clustered array problem,and a uniform subarray pattern synthesis approach based on accurate array response control is proposed.The desired subarray pattern can get from the output desired array pattern and the single clustered array pattern determined by cluster construction.On this basis,the quiescent pattern of subarray is controlled to suit for the desired pattern of subarray and the optimal weight vector is calculated by use of accurate array response control algorithm.Finally,we successfully achieve the uniform clustered array pattern synthesis.The proposed algorithm has the advantages of simple realization,high flexibility,and wide applications.Simulation results show that the proposed algorithm is effective for pattern synthesis of uniform subarray.Thus,this paper provides an important theory for the engineering.%相控阵多采用子阵划分来减少通道数,针对均匀划分子阵的波束赋形问题进行研究,提出了一种基于精确响应控制的波束赋形方法.具体来讲,首先由输出期望方向图和单个子阵静态方向图得到子阵级期望方向图;在此基础上利用精确阵列响应控制方法计算出最优权向量,使子阵级静态方向图满足于子阵级期望方向图;最终成功实现了均匀划分子阵的波束赋形.所提算法具有实现简单、灵活性强、适用范围广的优点.文中对所提算法进行了仿真验证,充分证实了所提算法的有效性,可以为子阵的实际工程应用提供重要的理论支撑.