多波束单光子雷达的多通道计时测量  

Multi-Channel Timing Measurement for Multi-Beam Single-Photon Radar

作　　者：汪琳莉 吴琛怡 祁慧宇 郑天翔 潘海峰[1] 杨雷 李召辉[1] 吴光[1] Wang Linli;Wu Chenyi;Qi Huiyu;Zheng Tianxiang;Pan Haifeng;Yang Lei;Li Zhaohui;Wu Guang(State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200241,China)

机构地区：[1]华东师范大学精密光谱科学与技术国家重点实验室,上海200241

出　　处：《激光与光电子学进展》2022年第2期72-77,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11804099,11774095)。

摘　　要：多波束单光子雷达在对地测绘和远距离成像等领域具有重要应用,而多通道计时测量技术很大程度上决定了整个系统的性能。因此,提出了一种基于时钟相移法的多通道时间数字转换并行测量方法。该方法可在单块Xilinx Artix-7系列现场可编程门阵列芯片上实现了100通道单光子信号的同时计时测量,计时分辨率可达到1.0 ns,测量精度为360 ps,量程为65μs。基于该装置可实现稳定性高、功耗小、速度快、结构紧凑的多通道单光子回波信号的高精度测量,满足多波束单光子雷达系统的计时需求。Multi-beam single-photon radar has important applications in fields such as earth surveying and long-range imaging,and multi-channel timing measurement technology significantly determines the performance of the entire system.Therefore,we propose a parallel measurement method of multi-channel time-to-digital conversion based on clock phase shifting method.Through a single Xilinx Artix-7 series field-programmable gate array chip,the method can realize the simultaneous timing measurement of 100 channels single-photon signal.The timing resolution of 1.0 ns,the measurement accuracy is 360 ps,and the range of 65μs.Based on the device,the multi-channel single-photon echo signal measurement are remarked on the advantages as high stability,low power consumption,high speed,and compact structure,which meets the timing requirements of the multi-beam single-photon radar.

关 键 词：探测器 单光子雷达 时钟相移法 现场可编程门阵列 计时测量 

分 类 号：TH714[机械工程—测试计量技术及仪器]