基于正交混频的相位激光测距实验分析系统  

Experimental analysis system of phase laser ranging based on orthogonal mixing

作　　者：李相敏[1] 康壮[1] LI Xiangmin;KANG Zhuang(Yangtze University College of Arts and Sciences,Jingzhou 434020,China)

机构地区：[1]长江大学文理学院,湖北荆州434020

出　　处：《激光杂志》2022年第6期170-174,共5页Laser Journal

基　　金：湖北省自然科学基金(No.2019CFC857)。

摘　　要：为了解决因F-P标准具间距和光栅入射角导致相位激光测距精度差大的问题,设计了基于正交混频的相位激光测距实验分析系统。设计了相位激光测距实验数据采集器和正交混频转换器,完成系统的硬件设计;在系统的软件设计中,利用飞行时间法提取出相位激光测距实验时间,结合设计的相位激光测距实验分析程序,实现了相位激光测距实验分析。系统测试结果表明,设计系统受到F-P标准具间距和光栅入射角的影响比较小,可以减小相位激光测距精度差,从而提高激光测距精度,当被测距离为3 m时,相位激光测距误差在-4×10^(-4) m,设计系统的相位差与实际值相差低于0.3°。In order to solve the problem of poor accuracy of phase laser ranging caused by the spacing of F-P etalon and the incident angle of grating, an experimental analysis system of phase laser ranging based on orthogonal mixing is designed. The phase laser ranging experimental data collector and quadrature mixing converter are designed, and the hardware design of the system is completed;In the software design of the system, the time of flight method is used to extract the experimental time of phase laser ranging. The system test results show that the design system is less affected by the F-P etalon spacing and grating incident angle, which can reduce the phase laser ranging accuracy difference and improve the laser ranging accuracy. When the measured distance is 3 m, the phase laser ranging error is-4×10^(-4)m, and the phase difference between the design system and the actual value is less than 0.3°.

关 键 词：正交混频 激光测距 数据采集 实验分析 时间提取 程序设计 

分 类 号：TN249[电子电信—物理电子学]