一种新的MIMO雷达发射波形设计方法  

A New Method for the Design of Transmit Waveform of MIMO Radar

作　　者：黄中瑞[1] 单凉 陈明建[1] 张剑云[1] 

机构地区：[1]电子工程学院,合肥230037

出　　处：《电子与信息学报》2016年第5期1026-1033,共8页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61201279);安徽省自然科学基金(1408085MF128)~~

摘　　要：该文提出一种约束基波束权值动态的MIMO雷达发射波形设计方法。首先,构造一组发射波形集并从理论上推导了阵元发射波形的恒模特性,在此基础之上,将各阵元平均发射功率的均匀性控制问题转化为基波束权值动态的定量约束问题;其次,建立了直接约束权值动态的基波束优化模型,利用切线投影法和区域迭代法将其进行凸松弛,并且给出了二阶锥规划子问题和序列锥迭代流程;最后,利用二阶锥规划设计出了基波束的比例系数。所提方法在保证MIMO雷达发射方向图匹配性能的前提下,能够兼顾阵元发射功率均匀性和发射方向图旁瓣功率的性能,因而在设计发射波形时更具灵活性。仿真实验验证了所提方法的有效性。A method for the design of transmit waveform of MIMO radar based on the dynamic range constraint in weight amplitude of basic beam is proposed. Firstly, a set of the transmit waveforms is constructed which can fulfill constant-modulus constraints. Further, the control of the difference between different elemental average transmit power is converted into the optimal of the weights dynamic of basic beam. What＇s more, a pattern synthesis of the basic beam with the constraint of weight amplitude dynamic range based on the sequential cone program is proposed. The optimal model can be slack as a series sub-convex optimization problem. And the second order cone program of the sub-convex and its iteration technique based on the sequential cone program is given subsequently. Lastly, the weighted coefficients of basic beam of transmit beampattern is computed via second order cone program. The efficiency and validity are verified by the simulation results.

关 键 词：MIMO雷达 发射方向图综合 波形设计 发射波形集 序列锥规划 二阶锥规划 

分 类 号：TN958[电子电信—信号与信息处理]