基于开关电容阵列的高速多元激光回波数字化技术  

High-Speed Multichannel Laser Echo Wave Digitizing Technology Based on Switched Capacitor Array

作　　者：于祥吉 王海伟[1] 丁宇星 黄庚华[1] 

机构地区：[1]中国科学院上海技术物理研究所中国科学院空间主动光电技术重点实验室,上海200083

出　　处：《红外》2017年第7期31-36,41,共7页Infrared

基　　金：国家863计划(2015AA123801)

摘　　要：设计了基于新型开关电容阵列技术的激光回波数字化系统,实现了每秒5G个采样点(Gigabit Samples per Second,GSPS)的采样速率。利用单片模拟数字转换器件(Analog Digital Converter,ADC)实现了多元信号采样。该系统具有很大的发展潜力。介绍了多米诺环形采样器(Domino Ring Sampler,DRS)4的控制策略。设计了基于DRS4芯片的激光回波数字化电路,搭建了激光测试系统,并开展了基于DRS4的信号采样实验。实验结果表明,采用DRS4芯片进行激光回波数字化,能够达到最高5GSPS的采样速率,可实现多元系统设计,增大视场,同时降低系统功耗和成本。A laser echo digitizing system based on a new switched capacitor array technology was designed. By using the system, the sampling rate of 5 Gigabit samples per second was achieved. Mul- tichannel sampling was realized by using a single chip analog digital converter. The system had a great potential for development. A laser echo digitizing circuit based on DRS4 chips was designed, a laser testing system was built and the signal sampling experiment based on DRS4 chips was carried out. The results showed that the laser echo digitizing circuit could obtain a sampling rate of 5 Gigabit samples per second, could realize multichannel sampling, could increase the field of view and could reduce the power consumption and cost of the system.

关 键 词：激光测距 开关电容阵列 回波数字化 

分 类 号：TN249[电子电信—物理电子学]