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基于开关电容阵列的高速多元激光回波数字化技术
投稿时间:2017-03-27  最后修改时间:2017-04-04  点此下载全文
引用本文:于祥吉,王海伟,丁宇星,黄庚华.基于开关电容阵列的高速多元激光回波数字化技术[J].红外,2017,38(7):31~36
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作者单位E-mail
于祥吉 中国科学院上海技术物理研究所 yuhaiyang421@163.com 
王海伟 中国科学院上海技术物理研究所 wanghaiwei@mail.sitp.ac.cn 
丁宇星 中国科学院上海技术物理研究所  
黄庚华 中国科学院上海技术物理研究所  
基金项目:国家863计划(2015AA123801)
中文摘要: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。
中文关键词:激光测距  开关电容阵列  回波数字化
 
High-Speed Multichannel Laser Echo Wave Digitizing Technology Based on Switched Capacitor Array
Abstract: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. Multichannel 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.
keywords:laser ranging  switched capacitor array  echo digitization
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