| GPS高程转换模型 |
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| 引用本文： | 王新桥,黄良珂,刘立龙,黄华娟.GPS高程转换模型[J].桂林工学院学报,2013(3):504-508. |
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| 作者姓名： | 王新桥 黄良珂 刘立龙 黄华娟 |
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| 作者单位： | [1]桂林理工大学广西矿冶与环境科学实验中心,广西桂林541004 [2]桂林理工大学测绘地理信息学院,广西桂林541004 [3]桂林理工大学广西空间信息与测绘重点实验室,广西桂林541004 [4]广西水利电力职业技术学院,南宁530023 |
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| 基金项目： | 国家自然科学基金项目（41064001）;广西自然科学基金项目（2012GXNSFGA060001;2012GXNSFAA053183）;广西空间信息与测绘重点实验室项目（桂科能1207115-07）;广西研究生教育创新计划项目（YCSZ2013077） |
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| 摘 要： | 传统二次曲面模型用于GPS高程转换时容易出现法方程病态,使用岭估计法能消除其病态性,但是目前岭参数k的确定缺乏良好的方法,k的不同取值会得到不同转换精度,提出二次曲面重心化模型和二次曲面归一化模型用于GPS高程转换.通过实测数据分析,两种模型均能消除法方程病态性,且具有较高的GPS高程转换精度.
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| 关 键 词： | GPS高程 二次曲面归一化模型 二次曲面重心化模型 岭估计 |
GPS Elevation Conversion Model |
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| WANG Xin-qiao＇,HUANG Liang-kelb＇lc,LIU Li-long,HUANG Hua-juan.GPS Elevation Conversion Model[J].Journal of Guilin University of Technology,2013(3):504-508. |
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| Authors: | WANG Xin-qiao＇ HUANG Liang-kelb＇lc LIU Li-long HUANG Hua-juan |
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| Affiliation: | 2 ( 1. a. Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment; b. College of Geomatic En- gineering and Geoinformatics ; c. Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin Universi- ty of Technology, Guilin 541004, China ; 2. Guangxi College of Water Resources and Electric Power, Nanning 530023, China) |
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| Abstract: | The normal equation may present the ill-conditioned problems when used to convert GPS elevation by traditional quadric model, and the ill-conditioned problems can be eliminated by ridge estimate. However, a better method to estimate the ridge parameter k was absent. The variations of the ridge parameter k would lead to different accuracies for GPS elevation conversion. Therefore, in this paper quadrie centralized model and quadric normalized model are proposed to convert GPS elevation. The analysis of the measured data shows that the ill-conditioned problems can be eliminated for the normal equation, with a high conversion precision. |
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| Keywords: | GPS elevation quadric normalized model quadric centralized model ridge estimate |
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