光学精密工程2018，Vol.26Issue(4)：788-795,8.DOI:10.3788/OPE.20182604.0788
机载激光雷达姿态角补偿及其效果验证
Effectiveness verification of attitude compensation for airborne LiDAR
摘要
Abstract
Airborne LiDAR scans a terrain surface to obtain a laser point cloud,which is used to recon-struct a 3-D image of the surveyed terrain.During the measurement procedure of airborne LiDAR,the attitude angles of the airborne platform always fluctuate,which has a significant influence on the point density distribution of the laser point cloud and on the accuracy of the reconstructed digital surface model(DSM).In order to compensate for the adverse effects of attitude fluctuations,an attitude com-pensation prototype was designed that includes the mechanical structure and control system design. To verify the influence of attitude fluctuations on LiDAR measurements and to validate the compensa-tion effectiveness of the designed attitude compensation prototype,a semi-physical simulation system was set up.The total control software was programmed to realize the time-synchronization control and data acquisition of all sub-systems.Using the semi-physical simulation system,the imaging pro-cedure of airborne LiDAR and the attitude compensation principle were simulated and verified,and the RMSE of the post-compensation DSM was reduced to 3.28 mm from the original that was over 3.50 mm.Experimental results show that the working process simulation for airborne LiDAR and the com-pensation principle of the designed attitude compensation prototype are correct,and that the attitude compensation prototype has significant compensation effectiveness for airborne LiDAR.关键词
机载激光雷达/姿态角波动/点云密度/半物理仿真/补偿/数字地表模型精度/点云Key words
airborne LiDAR/attitude fluctuation/point density/semi-physical simulation/compensa-tion/digital surface model accuracy/point cloud分类
信息技术与安全科学引用本文复制引用
王建军,李云龙,苗松..机载激光雷达姿态角补偿及其效果验证[J].光学精密工程,2018,26(4):788-795,8.基金项目
国家自然科学基金资助项目(No.51575326) （No.51575326）
国家留学基金资助项目(No.201508370010) （No.201508370010）
山东省自然科学基金教育厅联合专项(No.ZR2014JL027) （No.ZR2014JL027）
山东省青年教师成长计划经费(2015) （2015）
山东理工大学博士科研基金资助项目(No.4041-413028) （No.4041-413028）
淄博市校城融合项目(No.2017ZBXC161) （No.2017ZBXC161）
