摘要
针对大型天线在轨运行时的面形测量需求,设计了一种融合激光测距的视觉测量系统标定方法,以解决天线在轨面形测量过程中距离远、范围广、精度要求高等关键问题。首先建立了融合激光测距的视觉测量系统的模型,提出了基于光斑直线拟合的标定方法,利用主成分分析和随机抽样一致性方法对激光点数据进行处理,实现了激光测距仪与相机之间的外参数标定。通过仿真实验,验证了标定算法的可行性和鲁棒性,并分析了重投影噪声、激光光斑数量和激光测距精度对标定结果的影响。最后,标定实测实验结果表明,激光点坐标的空间位置误差为0.536 mm,验证了方法的精度和实用性。
This paper addresses the surface shape measurement requirements for large antennas during in-orbit op-erations by designing a visual measurement system calibration method that integrates laser ranging.This method aims to solve key challenges such as long distances,wide measurement ranges,and high precision requirements in antenna surface shape measurements.First,a model of the visual measurement system integrated with laser ranging is estab-lished.A calibration method based on the linear fitting of laser spots is proposed,where principal component analysis and the Random Sample Consensus(RANSAC)algorithm are used to process the laser point data,enabling the cali-bration of the external parameters between the laser rangefinder and the camera.Simulation experiments verify the fea-sibility and robustness of the calibration algorithm,and the influence of reprojection noise,the number of laser spots,and laser ranging accuracy on the calibration results is analyzed.Finally,experimental results from the calibration measurements show that the spatial position error of the laser point coordinates is 0.536 mm,demonstrating the accura-cy and practicality of the proposed method.
作者
康新瑶
王君
燕必希
孙鹏
KANG Xinyao;WANG Jun;YAN Bixi;SUN Peng(School of Instrument Science and Opto-Electronics Engineering,Beijing Information Science and Technology University,Beijing 100192,China)
出处
《激光杂志》
北大核心
2025年第8期54-59,共6页
Laser Journal
基金
国家重点研发计划青年科学家项目(No.2023YFB3905200)
北京信息科技大学大学生创新创业训练计划项目资助。
关键词
激光测距
联合标定
主成分分析
随机抽样一致性
laser rangefinding
joint calibration
principal component analysis
random sample consensus
作者简介
康新瑶(1998-),女,硕士,主要研究方向:视觉测量与图像处理。E-mail:kxy1820939197@163.com;通讯作者:王君,男,博士,硕士生导师,主要研究方向:视觉测量与光电检测技术。E-mail:wangjun@bistu.edu.cn。
