红外, 2017, 38 (7): 31, 网络出版: 2017-11-21
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
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。
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.
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. YU Xiang-ji, DING Yu-xing, WANG Hai-wei, HUANG Geng-hua. High-Speed Multichannel Laser Echo Wave Digitizing Technology Based on Switched Capacitor Array[J]. INFRARED, 2017, 38(7): 31.