地基分布式相参雷达技术研究综述  

Research Overview of Ground-Based Distributed Coherent Aperture Radar

作　　者：刘泉华[1,3] 张凯翔 梁振楠 曾涛 龙腾[1] LIU Quanhua;ZHANG Kaixiang;LIANG Zhennan;ZENG Tao;LONG Teng(Radar Research Lab,School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China;Key Laboratory of Electronic and Information Technology in Satellite Navigation(Beijing Institute of Technology),Ministry of Education,Beijing 100081,China;Beijing Institute of Technology Chongqing Innovation Center,Chongqing 401135,China)

机构地区：[1]北京理工大学信息与电子学院雷达技术研究所,北京100081 [2]卫星导航电子信息技术教育部重点实验室(北京理工大学),北京100081 [3]北京理工大学重庆创新中心,重庆401135

出　　处：《信号处理》2022年第12期2443-2459,共17页Journal of Signal Processing

基　　金：国家自然科学基金(62201048);重庆市自然科学基金(2020ZX3100039)。

摘　　要：地基分布式雷达是由多部单元雷达分置部署、协同工作实现目标探测的雷达系统,部署在地基平台,照射源除自身还可用合作、非合作跨平台照射源,各单元雷达间可信号级相参融合。传统集中式雷达在复杂场景中难以探测识别低可观测目标,分布式雷达有望解决上述瓶颈问题,并实现侦干探通一体化,因此分布式相参雷达体制是未来雷达形态发展的重要方向之一。分布式雷达体系复杂,涉及维度、要素多,须研究探索合理有效的工作范式。本文系统介绍了地基分布式相参雷达发展的新趋势和新技术,通过信号级融合处理,可形成大口径稀疏阵列,获得极窄的高增益波束,可采用更多更先进的信号处理算法探测和精确定位目标。本文介绍该领域最新的研究进展和代表性成果,围绕分布式相参增程探测、分布式相参成像、分布式相参抗干扰、分布式系统同步校准等四个方面的关键问题和技术难点展开论述,并对分布式雷达体制的前景进行了展望。Ground-based distributed coherent aperture radar(GB-DCAR)is deployed by decentralized multiple groundbased radars,working together to achieve target detection.Both cooperative and non-cooperative cross-platform illumination sources besides radar’s own transmitter can be used,and signal-level fusion processing can be realized.In complex scenarios,traditional monostatic radar is difficult to detect and identify low observable targets,while GB-DCAR aims to solve the above bottleneck problem and realizes the integrated technology of reconnaissance,interference,detection and communication.Therefore,GB-DCAR has been considered as a promising direction of next generation radar.GB-DCAR is a highly complex system involving many factors,so it is necessary to study and explore a reasonable and effective working paradigm.This paper systematically introduces the new trends and technologies of the development of GB-DCAR.An equivalent large-aperture sparse array with high-gain and extremely narrow beams is formed by signal-level fusion processing,enabling more advanced signal processing algorithms to detect and accurately locate various targets.This paper then presents the latest progress and representative achievements of GB-DCAR and discusses the issues and solutions relevant to coherent processing,imaging,anti-jamming,system synchronization and calibration.Finally,future prospects for GBDCAR are discussed.

关 键 词：分布式相参雷达 相参增程探测 相参成像 相参抗干扰 系统同步 

分 类 号：TN958.92[电子电信—信号与信息处理]