恒模和相似性约束下机载MIMO雷达快速波形设计优化算法  

Optimization Algorithm of Fast Waveform Design for Airborne MIMO Radar with Constant Modulus and Similarity Constraints

作　　者：童日武 张剑云 周青松 TONG Ri-wu;ZHANG Jian-yun;ZHOU Qing-song(National University of Defense Technology,Hefei 230037,China)

机构地区：[1]国防科技大学

出　　处：《舰船电子对抗》2019年第6期45-52,共8页Shipboard Electronic Countermeasure

摘　　要：针对机载多输入多输出(MIMO)雷达下视工作时面临强地杂波干扰的问题,考虑对发射波形和接收滤波器进行联合设计以进一步提高信干噪比(SINR)从而增强对地面动目标的检测性能。在波形设计阶段,以最大化SINR为指标,同时对波形施加恒模和相似性约束,最后提出了一种快速迭代优化算法求解非凸联合优化问题。在性能评估阶段,通过数值实验证明了所提算法能够起到恒模和相似性约束效果,另外与现有算法对比具有更低的运算复杂度。In view of the fact that airborne multiple-input multiple-output(MIMO)radar faces strong ground clutter interference when it looks down,the transmission waveform and receiving filter are designed jointly in this paper in order to further improve the signal to interference plus noise ratio(SINR)so as to enhance the detection performance of moving targets on the ground.In the phase of waveform design,we take the maximum SINR as the design index and force constant modulus and similarity constraints to waveform at the same time,finally propose a fast iterative optimization algorithm to solve the non-convex joint optimization problem.At the stage of performance evaluation,numerical experiments show that the proposed algorithm can play a constant modulus and similarity constraint effect.In addition,compared with the existing algorithm,the proposed algorithm has lower computational complexity.

关 键 词：机载多输入多输出雷达 杂波 波形设计 接收滤波器 信干噪比 恒模约束 相似性约束 

分 类 号：TN959.[电子电信—信号与信息处理]