基于OAM提升脉冲激光测距精度的研究
Research on improving the accuracy of pulsed laser ranging based on OAM
摘要
在自由空间进行脉冲激光测距实验中，由于大气湍流环境以及背景光噪声等影响，使激光在空间中传输会出现不同程度的扰动等，这使得为了提高脉冲激光测距系统的测距精度成为主要困难。本文利用轨道角动量调制脉冲激光，模拟涡旋光在大气湍流环境下的传输特性。此外，在具有背景光噪声以及湍流环境下分别进行了高斯光测距实验以及涡旋光测距实验，并利用卡尔曼滤波算法对数据进行处理，以此进一步降低湍流对测距精度的影响，将高斯光在背景噪声和湍流环境叠加情况下的测距精度误差由±1cm降低至±2mm。
Abstract
In free-space pulse laser ranging experiments, various disturbances arise during the laser propagation due to factors such as atmospheric turbulence and background light noise. These challenges hinder the improvement of ranging accuracy in pulse laser ranging systems. In this study, we utilize orbital angular momentum-modulated pulse laser to simulate the transmission characteristics of vortex beams in atmospheric turbulence. Additionally, experiments were conducted separately for Gaussian beam ranging and vortex beam ranging under background light noise and turbulent conditions. The data were processed using the Kalman filtering algorithm to further mitigate the effects of turbulence on ranging accuracy. As a result, the ranging accuracy error of Gaussian beam under combined background noise and turbulent conditions was reduced from ±1 cm to ±2 mm.关键词
轨道角动量/脉冲激光测距/大气湍流Key words
Orbital angular momentum/Pulsed laser ranging/Atmospheric turbulence引用本文复制引用
于雯婷,卢奕奇,吴国华,李星宸,尹龙飞.基于OAM提升脉冲激光测距精度的研究[EB/OL].(2024-04-03)[2026-04-05].http://www.paper.edu.cn/releasepaper/content/202404-108.学科分类
光电子技术
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