雷达采集存储设备中回波信号的TOA检测方法  

TOA detection method of echo signal in radar acquisition and storage equipment

作　　者：戴宗武[1] 张少甫[1] 龚志红 苏雅 史常丽 DAI Zongwu;ZHANG Shaofu;GONG Zhihong;SU Ya;SHI Changli(Space Star Technology Co.,LTD,Beijing 100080,China;The Seventh Military Representative Section of Air Force Equipment in Beijing,Beijing 100086,China)

机构地区：[1]航天恒星科技有限公司,北京100080 [2]空装驻北京地区第七军事代表室,北京100086

出　　处：《太赫兹科学与电子信息学报》2021年第3期386-390,共5页Journal of Terahertz Science and Electronic Information Technology

摘　　要：雷达数据采集存储设备是雷达系统中的重要设备。工程实现中,为了线下实测回波信号的到达时间(TOA),针对雷达采集存储设备中的实测回波信号进行了分析,提出了基于自适应阈值双门限的脉冲重复间隔(PRI)的TOA检测,在收发分时系统中的任意回波数据段中实现PRI的TOA检测,检测速度为11ms左右;提出了基于滑窗法的合成孔径雷达(SAR)目标回波的TOA检测,有效检测出雷达系统中SAR目标回波的TOA,并进行了仿真验证。Radar data acquisition and storage equipment is an important equipment in radar system.It provides an effective method for off-line processing of Time of Arrival(TOA)of measured echo signal in engineering implementation.In this paper,the actual echo signal in radar acquisition and storage equipment is analyzed,and the TOA of Pulse Repetition Interval(PRI)detection method based on adaptive double-threshold is proposed,which can realize TOA detection of PRI in any echo data segment of time-sharing systems with a detection speed about 11ms.The TOA detection of Synthetic Aperture Radar(SAR)target echo based on sliding window method is proposed.The TOA of SAR target echo is effectively detected and verified by simulation.

关 键 词：雷达数据采集存储设备 到达时间 自适应阈值双门限法 滑窗法 合成孔径雷达 

分 类 号：TN957.51[电子电信—信号与信息处理]