MIMO雷达正交频分非线性调频波形设计  

Orthogonal Frequency Division-Nonlinear Frequency Modulation Waveform Design for MIMO Radar

作　　者：赵伟[1] 赵永波[1] 李慧[1] 刘峥[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《电子学报》2014年第11期2331-2336,共6页Acta Electronica Sinica

基　　金：中央高校基本科研业务费专项资金(No.K5051202047)

摘　　要：正交波形是多输入多输出雷达应用最广泛的波形,评价波形正交性好坏的重要指标是波形的自相关和互相关性能.针对正交频分线性调频信号的自相关存在主副比低且加窗抑制旁瓣会带来主瓣展宽和失配损失的问题,本文提出了正交频分非线性调频信号的模型和设计方法.仿真分析证明了该种波形比正交线性调频信号具有更好的相关性能.Orthogonal waveform is the most widely used waveform in multiple input multiple output（ MIMO） radar systems. The good performance in both auto-correlation and cross-correlation of transmitted orthogonal waveform is crucial for MIMO radar. In order to overcome the deficiency in auto-correlation performance of orthogonal frequency division-linear frequency modulation（ OFD-LFM） signals,this paper proposes the model of orthogonal frequency division-nonlinear frequency modulation（ OFD-NLFM） signals. The design method of OFD-NLFM signals for MIMO radar is also presented. Simulation results show that OFD-NLFM signals have better performance in both auto-correlation and cross-correlation compared with OFD-LFM signals.

关 键 词：多输入多输出雷达 波形设计 正交频分线性调频 正交频分非线性调频 

分 类 号：TN957[电子电信—信号与信息处理]