| 高阶地球重力场模型的评价及其优选 |
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| 引用本文： | 邱斌,朱建军,乐科军.高阶地球重力场模型的评价及其优选[J].测绘科学,2008,33(5). |
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| 作者姓名： | 邱斌 朱建军 乐科军 |
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| 作者单位： | 中南大学信息物理工程学院,长沙,410083;中南大学信息物理工程学院,长沙,410083;中南大学信息物理工程学院,长沙,410083 |
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| 摘 要： | 采用"移去-恢复"技术确定大地水准面,需要一个全球重力场模型作为参考场。本文采用基于模糊集合理论的最大隶属度原则,通过某试验区的33个GPS水准点的实测大地水准面差距与模型大地水准面差距的比较分析,从国际重力场服务提供的EGM96、EIGEN-CG01C、EIGEN-CG03C、GFZ93A、GFZ96、OSU91A、PGM2000A等七个高阶全球重力场模型中,选择OSU91A作为该地区最优的参考重力场模型。
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| 关 键 词： | 大地水准面差距 GPS水准 地球重力场模型 优选 模糊集合理论 |
Evaluation and optimal selection of high-order earth's gravity field models |
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| QIU Bin,ZHU Jian-jun,LE Ke-jun.Evaluation and optimal selection of high-order earth's gravity field models[J].Science of Surveying and Mapping,2008,33(5). |
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| Authors: | QIU Bin ZHU Jian-jun LE Ke-jun |
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| Abstract: | While the "Remove-Restore" technology is applied to determine a geoid,an Earth's gravity field model regard as a referenced Geo-potential model is very essential.Here,after comparing and analyzing these actual model's geoidal undulations of 33 GPS/leveling points,OSU91A is the preferable geo-potential model of the test area according to maximum membership principle based on fuzzy set theory.The optimal model is selected from Seven high-order geo-potential models provided by IGFS(International Gravity Field Service),such as EGM96,EIGEN-CG01C,EIGEN-CG03C,GFZ93A,GFZ96,OSU91A and PGM2000A. |
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| Keywords: | geoidal undulation GPS/leveling earth's gravity field model optimal selection fuzzy set theory |
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