光学精密工程2018，Vol.26Issue(4)：757-763,7.DOI:10.3788/OPE.20182604.0757
地面激光扫描标靶的优化布设
Optimal layout of calibration target in terrestrial laser scanning
摘要
Abstract
Deformation monitoring with terrestrial 3D laser scanner commonly uses fixed calibration targets to register point cloud data of multiple periods.Therefore,the accuracy of the target registra-tion directly affects the measurement error.In order to improve registration accuracy,measurement errors of different calibration target layout were analyzed.First,the calibration target points (M1-M8)at different distances(25,50,100,150,200 m)are registered,and the differences in the coordinates of eight target points(T1-T8)are obtained by comparing two period data.Finally,the errors of different calibration target layout and their sources are analyzed.Experimental results show that optimal distance of calibration target should be about 50 m from the scanner,and when a matc-hing angle deviation exists,the measurement error will increase in the same direction.In this study, the matching precisions at different distances are obtained.This,along with other important aspects detailed in the paper,can be used as a reference for calibration target layouts in practical slope engineering.关键词
地面激光扫描/标靶/变形监测/误差分析/配准Key words
Terrestrial Laser Scanning(TLS)/calibration target/deformation monitoring/error anal-ysis/target registration分类
天文与地球科学引用本文复制引用
杜岩,吴志祥,谢谟文,吕夫侠,余国..地面激光扫描标靶的优化布设[J].光学精密工程,2018,26(4):757-763,7.基金项目
国家自然科学基金资助项目(No.41372370 （）
41702371) （）
