| GPS水准面拟合方法研究 |
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| 引用本文： | 姚吉利,褚丽丽,于志路.GPS水准面拟合方法研究[J].测绘工程,2005,14(4):23-26. |
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| 作者姓名： | 姚吉利 褚丽丽 于志路 |
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| 作者单位： | 山东理工大学,建筑工程学院,山东,淄博,255049;武汉大学测绘遥感信息工程国家重点实验室,湖北,武汉,430079;山东正元地理信息工程有限责任公司烟台分公司,山东,烟台,264002 |
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| 摘 要： | 研究用较多已测点的原始数据,分别采用GPS水准的六参数法、多面函数法、移动曲面拟合法、有限元法逼近GPS网中较少检核点的高程异常值;再用较少已测点的原始数据,逼近GPS水准网中较多检核点的高程异常值.通过对实测数据的计算分析可发现,具有分区拟合性质的移动曲面拟合法与有限元法较优,使用较少的拟合点时,实测三等水准联合GPS高程观测可取代四等水准测量.
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| 关 键 词： | 大地水准面 高程异常 GPS水准 六参数法 多面函数法 移动曲面拟合法 有限元法 |
| 文章编号： | 1006-7949（2005）04-0023-04 |
| 收稿时间： | 2005-07-04 |
| 修稿时间： | 2005年7月4日 |
Method of fitting of GPS geoid |
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| YAO Ji-li,CHU Li-li,YU Zhi-lu.Method of fitting of GPS geoid[J].Engineering of Surveying and Mapping,2005,14(4):23-26. |
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| Authors: | YAO Ji-li CHU Li-li YU Zhi-lu |
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| Institution: | 1. School of Architecture Engineering, Shandong University of Technology, Zibo, 255049, China; 2. State Key Laboratory of Inforrmtion Engineering in Surveying, Mapping and Remote Sensing, Wuhan University,Wuhan 430079,China; 3, Yantai Filiatle of Shandong Zhenyuan Geographic information Engineering, Yantai 264002, China |
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| Abstract: | GPS can provide precise three-dimensional coordinates of the points on earth, and its height is based on ellipsoid. At first, use large number of known point of original data, adopt six parameters method, multi- surface function, movement method and the finite element method of GPS leveling to approximate the abnormal height curved surface of the few check point; then, use few known point of original data to approximate the large number of check point in GPS network. It indicates that movement method and the finite element method which have the subarea nature are better, and the third class leveling combing GPS can replace the fourth class leveling. |
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| Keywords: | geoid abnormal height GPS leveling six parameters method multi-surface function movementmethod the finite element method |
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