高速高精度实时相位式激光测距系统  

High-speed and high-precision real-time phase laser ranging system

作　　者：潘映伶 纪荣祎 祁勤 高萌 周维虎 PAN Yingling;JI Rongyi;QI Qin;GAO Meng;ZHOU Weihu(Institute of Microelectronics,Chinese Academy of Sciences,Beijing 100094,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Instrument Science and Opto-electronics Engineering,Hefei University of Technology,Hefei 230000,China)

机构地区：[1]中国科学院微电子研究所,北京100094 [2]中国科学院大学,北京100049 [3]合肥工业大学仪器科学与光电工程学院,安徽合肥230000

出　　处：《光学精密工程》2023年第16期2343-2351,共9页Optics and Precision Engineering

基　　金：民用航天预研项目资助(No.D020214);国家重点研发计划资助项目(No.2019YFB2004900)。

摘　　要：为解决工业现场测量对高速实时精密测距的需求,设计并搭建了一套高速高精度的激光测距系统。系统采用双测尺同时调制的激光光源以及双路信号同步探测的信号处理技术,提高了系统测量速度以满足高速测距的需求;分析验证了欠采样方法应用于的高频信号测鉴相的有效性,基于欠采样可有效降低了鉴相处理电路的复杂度。采用201 MHz+3 MHz的双测尺调制光源及40 MHz的采样频率,结合收发光学系统及信号解算电路,搭建了高速激光测距系统;进行了激光测距系统的测量速度和测量精度实验。实验结果表明,该测量系统的测量速度可达62次/s,测距精度可达±0.2 mm。该系统具有高速高精度的实时测量性能,可用于高精度激光扫描仪、动态跟踪测量等高速测距系统。To solve the demands for high-speed real-time precision ranging in industrial field measure⁃ment,various high-speed and high-precision laser ranging systems have been designed and developed.The design of dual ruler frequency synchronously-modulated laser and dual signal synchronous detection improves the measurement speed of the system to meet the needs of high-speed ranging.The under-sam⁃pling method applied to the high-frequency signal phase detection has been analyzed and proved effective⁃ly,which considerably reduces the complexity of the phase detection processing circuit.The integrated high-speed laser ranging system,which uses 201 MHz+3 MHz dual rule-modulation laser source and a sampling frequency of 40 MHz,combining with optical transceiver system and signal solution circuit.The measurement speed and measurement accuracy of the laser ranging system were tested.The experimental results indicate that the measurement speed of the measurement system can reach 62 times/s,and the ranging accuracy can reach±0.2 mm.The real-time measurement performance of the system with high speed and high accuracy is effectively verified,which can be used for high-speed ranging systems such as high-precision laser scanners and dynamic tracking measurement.

关 键 词：相位测距 高速高精度 欠采样 实时测量 高频调制 

分 类 号：TN249[电子电信—物理电子学] P225.5[天文地球—大地测量学与测量工程]