| 利用EGM2008位模型计算中国高程基准与大地水准面间的垂直偏差 |
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| 引用本文： | 翟振和,魏子卿,吴富梅,任红飞.利用EGM2008位模型计算中国高程基准与大地水准面间的垂直偏差[J].大地测量与地球动力学,2011,31(4):116-118. |
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| 作者姓名： | 翟振和 魏子卿 吴富梅 任红飞 |
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| 作者单位： | 1)解放军信息工程大学测绘学院，郑州 450052;;2)西安测绘研究所，西安 710054 |
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| 摘 要： | 高程基准面相对于大地水准面的垂直偏差是区域高程基准转换和全球高程基准统一的基础数据.利用最新发布的EGM2008地球重力场模型和中国均匀分布的936个GPS水准点数据计算得出中国青岛大港验潮站的重力位为62 636 852.85±0.07 m2/s2,进而得到中国1985高程基准相对大地水准面的垂直偏差为0.32 m.
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| 关 键 词： | EGM2008位模型 大地水准面 高程基准 重力位 基准偏差 |
COMPUTATION OF VERTICAL DEVIATION OF CHINESE HEIGHT DATUM FROM GEOID BY USING EGM2008 MODEL |
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| Zhai Zhenhe,Wei Ziqing,Wu Fumei,and Ren Hongfei.COMPUTATION OF VERTICAL DEVIATION OF CHINESE HEIGHT DATUM FROM GEOID BY USING EGM2008 MODEL[J].Journal of Geodesy and Geodynamics,2011,31(4):116-118. |
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| Authors: | Zhai Zhenhe Wei Ziqing Wu Fumei and Ren Hongfei |
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| Institution: | 1)Institute of Surveying and Mapping of Information Engineering University,Zhengzhou 4500522)Xi’an Institute of Surveying and Mapping,Xi’an 710054 |
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| Abstract: | The vertical deviation of a local height datum from the geoid is essential and fundamental for the transformation of regional datums and the unification of the global height datum. The value of the gravity potential of Qingdao Dagang tidal station is acquired by using 936 GPS leveling point data and EGM2008 geopotential model, which is 62 636 852.85±0.07 m 2/s 2 , in turn ,a vertical deviation of 0.32 m of Chinese height datum from the geoid is obtained. |
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| Keywords: | EGM2008 model geoid height datum gravity potential vertical deviation |
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