机载激光雷达数据不同解算方法差异性分析  

Analysis on the differences among different trajectory algorithms for airborne LiDAR

作　　者：王萍 许振北 牟玉兴 付云洁 张辛鑫 王诗洋 刘本强 Wang Ping;Xu Zhenbei;Mu Yuxing;Fu Yunjie;Zhang Xinxin;Wang Shiyang;Liu Benqiang(32023 Troops,Dalian 116084,China)

机构地区：[1]32023部队,辽宁大连116084

出　　处：《工程勘察》2021年第9期74-78,共5页Geotechnical Investigation & Surveying

摘　　要：本文结合实际项目,利用精密星历、广播星历解算飞行轨迹,并分别与基站参与解算的飞行轨迹作对比分析,通过对不同区域的两个架次飞行轨迹差异性分析,定量评价三种解算方法轨迹的相对精度。结果表明,三种解算方法得到的轨迹互差在厘米至米级范围内,三种方法解算的飞行航迹坐标值从小到大顺序依次是广播星历航迹、精密星历航迹、DGPS航迹,且水平方向受解算方法影响最弱。In this paper,based on the actual project,the precise ephemeris and broadcast ephemeris are used to solve the flight trajectory and compared with the flight trajectory that the base station participates in the calculation.Analysis the difference of three kinds of flight trajectories at two engineering regions.The relative accuracy of the three different trajectory algorithms are quantitatively analyzed.The results show that the differences among trajectories are in the range of centimeters to meters.The differences of the flight path coordinates calculated by the three methods in ascending order are broadcast ephemeris,precision ephemeris and DGPS.And the horizontal direction is the weakest affected by the three different trajectory algorithms.

关 键 词：激光雷达 低空遥感 精密星历 广播星历 DGPS 

分 类 号：P237[天文地球—摄影测量与遥感]