基于二阶锥规划的共形阵列宽带方向图综合  

Conformal Array Beamforming for Broadband Signals Based on Second Order Cone Programming

作　　者：贾深惠 赵拥军[1] 陈沛[1] 刘亚奇[1] 刘成城[1] 

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2016年第4期437-442,共6页Journal of Information Engineering University

基　　金：国家863计划资助项目(2013AA7031015)

摘　　要：针对目前共形阵列方向图综合算法中全局优化算法计算复杂度高,已有凸优化算法不能处理宽带信号的问题,提出了一种基于二阶锥规划的共形阵列宽带恒定束宽方向图综合方法。该算法首先推导并建立了更为简单的共形阵列宽带信号模型;然后在频域上构造空间响应变化约束,并在空域上构造方向图的目标函数和约束条件;最后利用二阶锥规划求得最优权矢量,实现宽带信号方向图综合。理论分析和仿真结果表明,该方法能够有效地获得期望信号并抑制干扰信号,在计算复杂度上低于全局优化算法,且阵列响应具有良好的频率一致性。In order to solve the problems that the computational complexity of global optimization algorithm for the conformal array pattern synthesis is high and the existing convex optimization algorithm is not applicable for broadband signal processing, a conformal array pattern synthesis method of wideband signal based on second order cone programming （SOCP） is proposed in this paper. Firstly, a conformal array wideband signal model is constructed; then, the spatial response variation （SRV） a constraint in the frequency domain, as well as the objective function and constraints in the spatial domain, is established; finally, the optimal weight vector is obtained by using SOCP to achieve broadband signal pattern synthesis. Theoretical analysis and simulation results show that the algorithm can obtain the desired signal and suppress the interference signals, and the computational complexity of the proposed method is superior to that of global optimization algorithms, with good characteristics of frequency consistence of amplitude response.

关 键 词：共形阵列 方向图综合 二阶锥规划 宽带信号 

分 类 号：TN911[电子电信—通信与信息系统] TN823[电子电信—信息与通信工程]