Lorenz混沌调频雷达信号性能分析  

Performance analysis of Lorenz chaotic FM radar signal

作　　者：吴冉[1] 杨琰 王鑫 WU Ran;YANG Yan;WANG Xin(College of Computer and Information Engineering,Nanyang Institute of Technology,Nanyang 473004,Chin)

机构地区：[1]南阳理工学院计算机与信息工程学院,河南南阳473004

出　　处：《河南科技学院学报（自然科学版）》2018年第2期42-47,共6页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：河南省高等学校重点科研项目(15A520090)

摘　　要：为了提高雷达系统的性能,克服因离散混沌调频信号李雅普诺夫指数小造成混沌特性差的缺点,提出了Lorenz混沌调频信号.通过经初值优化处理后的Lorenz连续混沌系统产生该调频信号,将其应用于雷达中.从自相关、抗干扰能力、相图3个方面对Lorenz混沌调频雷达信号进行了仿真对比分析.仿真结果表明,Lorenz混沌调频雷达信号提高了雷达的测距精度、成像质量和抗干扰能力.In order to improve the performance of radar system,overcome the disadvantage of discrete chaotic FM signal＇s small Lyapunov index,which causes the poor chaotic characteristics.Lorenz chaotic FM signal was proposed,using Lorenz continuous chaotic system to produce the Lorenz chaotic FM signal,whose initial value was optimized.The Lorenz chaotic FM signal was applied to radar.Based on the simulation and comparative analysis of Lorenz chaotic FM radar signals from autocorrelation,anti-interference ability and phase diagram,the simulation results showed that Lorenz chaotic FM radar signal could improve radar＇s ranging accuracy,image quality and anti-interference ability.

关 键 词：LORENZ 混沌 调频 雷达 

分 类 号：TN956[电子电信—信号与信息处理]