面向高分辨率雷达的微波光子大带宽脉冲压缩信号生成技术研究进展  

Research on Microwave Photonic Wideband Pulse Compression Signal Generation for High-resolution Radars

作　　者：张武 谭庆贵[1] 蒋炜[1] 梁栋[1] 王迪[1] 龚静文 ZHANG Wu;TAN Qinggui;JIANG Wei;LIANG Dong;WANG Di;GONG Jingwen(National Key Laboratory of Science and Technology on Space Microwave,China Academy of Space Technology(Xi'an),Xi'an 710000,China)

机构地区：[1]中国空间技术研究院西安分院空间微波技术国家级重点实验室,西安710100

出　　处：《空间电子技术》2020年第4期71-78,共8页Space Electronic Technology

基　　金：稳定支持基金项目:(编号:HTKJ2020KL504003);重点实验室基金项目(编号:6142411185101)。

摘　　要：随着对高精度探测的不断追求,未来雷达系统正朝着大带宽的方向发展。目前的雷达系统,主要利用传统的微波技术生成雷达信号,受到电子瓶颈限制,单路带宽仅在2 GHz左右,难以满足高精度雷达探测的技术需求。微波光子信号生成技术具有大带宽的技术优势,被认为是可突破电子瓶颈的一种有效技术手段。可将微波光子信号生成技术引入雷达系统中,直接生成带宽高达41 GHz的雷达信号,从而大幅提高雷达系统的探测分辨率。文章首先介绍了微波光子大带宽脉冲压缩信号生成技术的应用情况,然后分类介绍了微波光子大带宽脉冲压缩信号生成技术的工作原理、主要实现方法及研究进展,最后对各类微波光子大带宽脉冲压缩信号生成技术进行了对比分析,并分析了限制其实际应用的具体问题。With the purse of the high detection accuracy,future radar systems are developing towards the direction of large bandwidth.The current radar systems mainlyμse traditional microwave technologies to generate pulse compression signal.Limited by the electronic bottleneck,the bandwidth of single-channel only can reach 2 GHz,which makes it difficult to meet the requirements of high-resolution radar.With the advantages of large bandwidth,the microwave photonic signal generation is considered as an effective method to break through the limitation of electronic bottleneck.The microwave photonic signal generation can be introduced to the radar systems to directly generate the pulse compression signal with bandwidth above 10 GHz,which can significantly improve the resolution of the radar systems.This paper firstly introduces the applications of microwave photonic pulse compression signal generation,then describes the working principle,realization methods,and research progress of microwave photonic pulse compression signal generation.Finally,the comparison of microwave photonic wideband pulse compression signal generation techniques is given and the problems of hindering their applications are analyzed.

关 键 词：微波光子 雷达 宽带 脉冲压缩信号 

分 类 号：TN929.13[电子电信—通信与信息系统]