控制區塊於光達資料處理之研究
| Autor: | Wang,Hsiu-Ying, 王琇瑩 |
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| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 An airborne LiDAR system is an active remote sensing system.It is an integration of laser scanner, INS and GPS. While compared with traditional geodetic survey and photogrammetry,LiDAR can quickly obtain the 3D coordinates and intensity data of the surface of objects. An airborne LiDAR system combines with three systems, the errors among systems should be considered. In order to effectively use LiDAR data, system errors has to be eliminated and reduced. In this paper four parameters in 3D conformal transformation has been used to model the system errors which contains a scale chage, two rotations and one elevation translation. Two different situations,one with known heights of control patches while the other with unknown heights of control patches, are both discussed. In the experiment, real data obtained from Leica ALS50 are used for analyzing. The results show that in the case of given elevations of control patches, the elevation discrepancies between control points and interpolated points are reduced ; while in the case of unknown elevations of control patches the relative elevation discrepancies between overlapped strips are reduced. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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