基于RSF信号的高频雷达重构性能分析  

Reconstruction Performance Analysis of High Frequency Radar Based on RSF Signal

作　　者：吕明久 孙宗良[1] 杨军 杜雄[1] 丁凯 LYU Mingjiu;SUN Zongliang;YANG Jun;DU Xiong;DING Kai(Unit 95980 of PLA,Xiangyang 441000,China;Air Force Early Warning Academy,Wuhan 430019,China)

机构地区：[1]解放军95980部队,湖北襄阳441000 [2]空军预警学院,湖北武汉430019

出　　处：《雷达科学与技术》2020年第2期169-174,179,共7页Radar Science and Technology

基　　金：国家自然科学基金(No.61671469);空军预警学院“厚基工程”重点资助项目。

摘　　要：基于压缩感知理论的随机步进频率高频雷达(Random Stepped Frequency High Frequency Radar,RSF HFR)稀疏重构性能受信号参数影响较大。针对上述问题,本文首先构建了RSF HFR二维稀疏重构模型。其次,利用感知矩阵互相关性能(最大互相关系数、平均互相关系数)对影响RSF HFR重构性能的因素进行分析,得出在相同合成带宽条件下,采用子脉冲随机步进方式、增加发射子脉冲个数的方式可以得到更好的RSF HFR二维稀疏重构性能的结论。最后,利用仿真实验对上述结论进行了验证。本文的研究为RSF HFR的波形设计提供了方向,具有重要的实际应用价值。The sparse reconstruction performance of random stepped frequency over-the-horizon radar based on compressed sensing theory is greatly affected by signal parameters.To solve these problems,this paper first constructs a two-dimensional sparse reconstruction model of RSF HFR.Secondly,the factors affecting the performance of RSF HFR reconstruction are analyzed by using the cross-correlation performance of sensing matrix(maximum cross-correlation coefficient,average cross-correlation coefficient).It is concluded that the two-dimensional sparse reconstruction performance of RSF HFR can be improved by adopting the random step mode of sub-pulse and increasing the number of emitter pulses under the same synthetic bandwidth.Finally,the above conclusions are verified by simulation experiments.This research provides a direction for waveform design of RSF HFR and has important practical application value.

关 键 词：随机步进频率信号 高频雷达 波形设计 稀疏重构 

分 类 号：TN957[电子电信—信号与信息处理]