| 利用GPS共视法确定重力位差及海拔高差的实验研究 |
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| 引用本文： | 刘杨,申文斌,夏敏,易俊.利用GPS共视法确定重力位差及海拔高差的实验研究[J].武汉大学学报(信息科学版),2011(6):640-643. |
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| 作者姓名： | 刘杨 申文斌 夏敏 易俊 |
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| 作者单位： | 武汉大学测绘学院;武汉大学地球空间环境与大地测量教育部重点实验室; |
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| 基金项目： | 国家863计划资助项目(2006AA12Z211); 武汉大学大学生创新实验资助项目(S2008239); 国家自然科学基金资助项目(40974015) |
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| 摘 要： | 阐述了GPS共视法的基本原理,讨论了利用重力频移法通过GPS共视观测数据确定重力位差和高程差的方法。利用国际权度局(BIPM)发布的时间序列数据,选取了4个守时台站之间的时间差序列进行实验。结果表明,受目前GPS共视法精度所限,高程差计算值与理论值之间的平均差异和标准差在几十m的量级水平。
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| 关 键 词： | GPS共视法 重力频移 重力位差 高程差 |
Determination of Geopotential Difference and Orthometric Height Difference Using GPS Common View |
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| LIU Yang SHEN Wenbin, XIA Min YI Jun.Determination of Geopotential Difference and Orthometric Height Difference Using GPS Common View[J].Geomatics and Information Science of Wuhan University,2011(6):640-643. |
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| Authors: | LIU Yang SHEN Wenbin XIA Min YI Jun |
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| Institution: | LIU Yang1 SHEN Wenbin1,2 XIA Min1 YI Jun1(1 School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China)(2 The Key Laboratory of Geospace Environment and Geodesy,Ministry of Education,China) |
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| Abstract: | GPS common-view approach is currently a widely used technique in time transfer.We analyze the principle and model of GPS common-view method and present a method to gain geopotential difference and orthometric height difference using GPS common-view data based on gravity frequency shift.We choose the time difference series among four stations from BIPM Circular T data to carry out the experiment.Results show that due to accuracy limit of GPS CV,the mean difference and standard deviation between calculated va... |
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| Keywords: | GPS common-view gravity frequency shift geopotential difference ortometric height difference |
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