频率调制连续波激光雷达测量技术的非线性校正综述  

Review of nonlinearity correction of frequency modulated continuous wave LiDAR measurement technology

作　　者：李超林 刘俊辰 张福民 曲兴华[1,2] Li Chaolin;Liu Junchen;Zhang Fumin;Qu Xinghua(School of Precision Instrument and Opto-Electronics Engineering,Tianjin University,Tianjin 300072,China;State Key Laboratory of Precision Measurement Technology and Instruments,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《光电工程》2022年第7期1-27,共27页Opto-Electronic Engineering

基　　金：国家重点研发计划资助项目(2018YFB2003501)。

摘　　要：现代测量技术中,频率调制连续波激光雷达结合了传统雷达和激光干涉测量的优点,凭借其非接触性、测量范围大、分辨率高和抗干扰能力强等特性,在大尺寸空间精密测量、微小测量以及生物计量等领域发挥着至关重要的作用。但实际应用中,激光光源的频率调制不能呈现出完全线性,使得频率调制连续波激光雷达技术的测量精度严重下降。所以,如何抑制激光的调频非线性带来的影响成为频率调制连续波激光雷达测量领域的一项研究热点。本文介绍了频率调制连续波激光雷达的工作原理,根据频率调制非线性校正方案的不同,针对性地介绍和分析了四种应用较为广泛和部分特殊的非线性校正方法,并进行了总结和展望。In modern measurement technology,frequency modulation continuous wave LiDAR combines the advantages of traditional radar and laser interferometry and plays an important role in the fields of the large-size space precision measurement,micro-distance measurement,and three-dimensional imaging with its characteristics such as non-contact,large measurement range,high resolution,and strong anti-jamming capability.However,in practical application,the frequency modulation of the laser light source can’t be completely linear,which greatly reduces the measurement accuracy of the frequency modulation continuous wave LiDAR technology.Therefore,how to suppress the effects of the laser frequency modulation nonlinearity has become a hot research topic in the field of frequency modulation continuous wave LiDAR measurement.This paper introduces the basic principle of the frequency modulation continuous wave LiDAR,and introduces four widely used nonlinear correction methods and some special nonlinear correction methods according to the different nonlinear correction schemes of the frequency modulation,and makes summaries and prospects.

关 键 词：频率调制连续波 激光雷达 干涉测量 非线性校正 

分 类 号：TN958.98[电子电信—信号与信息处理]