利用目标与杂波先验知识的机载雷达发射波形自适应生成方法  

Transmitted Waveform Adaptive Generation Method for Airborne Radar Utilizing Prior Knowledge of Target and Clutters

作　　者：陈星波[1] 周加兵[1] 刘丁赟 邱朝阳 王刚[3] 饶妮妮[1] Chen Xingbo;Zhou Jiabing;Liu Dingyun;Qiu Chaoyang;Wang Gang;Rao Nini(Biomedical Engineering,University of Electronic Science and Technology of China,Chengdu,610054,China;Radar and Avionics Institute,Aviation Industry Corporation of China,Wuxi,214063,China;;Electronic Engineering,University of Electronic Science and Technology of China,Chengdu,611731,China)

机构地区：[1]电子科技大学生物医学工程系,成都610054 [2]中国航空工业集团公司雷华电子技术研究所,无锡214063 [3]电子科技大学电子工程学院,成都611731

出　　处：《数据采集与处理》2018年第5期837-846,共10页Journal of Data Acquisition and Processing

基　　金：航空科学基金(20142080011)资助项目

摘　　要：发射波形自适应能够优化雷达在检测、跟踪和抗干扰等方面的能力,但其性能的好坏与雷达目标和杂波先验知识有很强的相关性。采用最大输出信杂噪比准则设计的雷达发射波形自适应方法已经在理论上被证实可行和有效。为了提升这类方法的实际应用价值,本文利用Swerling统计模型和数字高程模型(Digital elevation model,DEM)提供的目标和杂波先验信息,针对机载相控阵雷达,分析了基于最大输出信杂噪比(Signal-to-clutter-noise ratio,SCNR)准则的发射波形自适应方法性能和实用价值。仿真结果表明,这类发射波形能够自适应地随着目标和杂波的变化而改变,并实现二者的最优匹配,在提升雷达输出信杂噪比上优于传统发射波形,具有良好的实际应用前景。The adaptation of transmitted waveform can enhance radar performances in detection,track,anti-jamming,etc.But the performance of this technique is linked with the prior knowledge of the radar target and clutters.In theory,the adaptive method of transmitted waveform based on maximum output signal-to-clutter-noise ratio(SCNR)criterion has been proved to be feasible and effective.In this paper,for enhancing practical application value of this adaptive method,the performance of the transmitted waveform adaptation method was verified by utilizing the prior knowledge of targets and clutters provided by Swerling statistic model and the digital elevation model(DEM)in airborne phased array radar.The simulation results show that the transmitted waveform can adaptively vary with the change of target and clutter for achieving the optimal matching of the two.Therefore,this method is better than the traditional methods in increasing output SCNRs of radar.It has good practical application prospects.

关 键 词：机载雷达 相控阵天线 发射波形 时域合成 数字波束形成 

分 类 号：TN959.73[电子电信—信号与信息处理] TN911.7[电子电信—信息与通信工程]