基于短波数字广播信号的天波雷达波形研究  

Research on Sky-wave Radar Waveform Based on Shortwave Digital Broadcast Signal

作　　者：李明玥 高火涛[1] 冯泊宁 张小林[2] 梁立正 LI Mingyue;GAO Huotao;FENG Boning;ZHANG Xiaolin;LIANG Lizheng(Electronic Information School,Wuhan University,Wuhan 430073,China;The 38th Research Institute of CETC,Hefei 230088,China;Wuhan Hongfei Weiye Technology Co.,Ltd.,Wuhan 430070,China)

机构地区：[1]武汉大学电子信息学院,湖北武汉430073 [2]中国电子科技集团公司第三十八研究所,安徽合肥230088 [3]武汉鸿飞伟业技术有限公司,湖北武汉430070

出　　处：《无线电工程》2023年第4期772-780,共9页Radio Engineering

基　　金：快速扶持项目(61404130132);湖北省重点自然科学基金(2014CFA093);中央高校基本科研业务费专项资金重点培育项目(2042019K50264,2042019GF0013,2042020GF0003)。

摘　　要：针对远程天波雷达大功率发射系统构建、建站和运维成本高昂等实际问题,通过共享民用大功率短波数字调幅广播发射波形作为天波雷达发射信源是一种潜在的选择。从短波数字调幅广播发射信号波形出发,采用模糊函数作为分析工具,详细研究短波数字调幅广播发射波形用于天波雷达目标探测的分辨率、副峰与抗干扰性等特性并与常用的天波雷达线性调频信号进行对比。通过仿真及对新闻、音乐等不同音调节奏及其他多种类型的实际广播节目信号探测性能的研究可知,短波数字广播信号可用于天波雷达信号源,对基于民用短波数字调幅广播发射信号构建天波雷达和广播雷达一体化技术具有指导意义。In view of the practical problems such as high cost of construction,operation and maintenance of sky-wave over-the-horizon radar high-power transmitting system,it is a potential choice to share the transmitting waveform of civil high-power shortwave digital AM broadcast as the transmitting source of sky-wave over-the-horizon radar.Based on shortwave digital AM broadcast emission signal waveform,ambiguity function is used as an analysis tool to study in detail the characteristics of shortwave digital AM broadcast waveform for sky wave radar target detection,such as resolution,side peak and anti-interference.The broadcast signal is compared with the linear frequency modulation signal commonly used in sky wave radar.Through simulation and research on detection performance of signals of different tones,rhythms and other types of actual broadcast programs such as news and music,it is shown that the transmitted signal waveform of shortwave digital AM broadcast can be used as the signal source for target detection of sky-wave radar,and it has guiding significance for constructing the integrated technology of sky-wave radar and broadcast radar based on the transmitted signal of civil shortwave digital AM broadcast.

关 键 词：短波数字调幅广播 信号波形 模糊函数 广播雷达一体化 

分 类 号：TN958[电子电信—信号与信息处理]