分布式地基雷达深空探测技术  

Deep Space Detection Using Distributed Earth-Based Radar

作　　者：丁泽刚[1,2,3] 曾涛 张光伟[1,2] 向寅 刘怡 张天意 董泽华 龙腾 DING Zegang;ZENG Tao;ZHANG Guangwei;XIANG Yin;LIU Yi;ZHANG Tianyi;DONG Zehua;LONG Teng(Radar Research Lab,School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China;Beijing Key Laboratory of Embedded Real-Time Information Processing Technology,Beijing 100081,China;Chongqing Innovation Center,Beijing Institute of Technology,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]嵌入式实时信息处理技术北京市重点实验室,北京100081 [3]北京理工大学重庆创新中心,重庆401135

出　　处：《雷达科学与技术》2022年第1期28-33,40,共7页Radar Science and Technology

基　　金：国家自然科学基金重点项目(No.11833001,61931002)。

摘　　要：地基雷达深空探测可以获得天体的轨道、形貌、材质等信息,可用于深空的科学研究。地基雷达深空探测的回波信噪比极低,需要增大天线口径、提高发射功率,由于口径、体积等方面的因素,单台套雷达天线不能无限制地扩大,发射功率也不能无限制地提高,因此需要研究可扩展性强的雷达体制。分布式雷达是一种由多部单元雷达和中心控制处理系统组成的新体制雷达,通过增加雷达单元数量,可以实现口径的空域扩展和能量合成,等效形成一部大口径、高功率的雷达,结合长时间积累技术,分布式地基雷达将实现更远距离和更高分辨的深空目标探测,看到更加遥远的天体。Deep space detection by earth-based radar can obtain the information about the orbit,shape,and material of celestial body,which can be used for scientific research about deep space.The echo signal-to-noise ratio of earth-based radar for deep space detection is extremely low,so it is necessary to increase the antenna aperture and the transmit power.Due to factors such as aperture and volume,the antenna of a single radar cannot be expanded indefinitely,and the transmit power cannot be increased indefinitely.Therefore,it is necessary to study a highly scalable radar system.Distributed radar is a new type of radar composed of multiple radars and a central control processing system.By increasing the scale of the radar,it can achieve aperture expansion and energy synthesis,equivalently forming a large-aperture,high-power radar.Combined with long-term accumulation technology,distributed earth-based radar will achieve longer range and higher resolution deep space target detection and see more distant celestial bodies.

关 键 词：地基雷达 深空探测 分布式雷达 长时间积累 

分 类 号：TN959.6[电子电信—信号与信息处理]