国家高程基准与全球高程基准之间的垂直偏差

doi:10.11947/j.AGCS.2016.20160029

测绘学报 ›› 2016, Vol. 45 ›› Issue (7): 768-774.doi: 10.11947/j.AGCS.2016.20160029

国家高程基准与全球高程基准之间的垂直偏差

赫林¹, 李建成^1,2, 褚永海^1,2

1. 武汉大学测绘学院, 湖北武汉 430079;
2. 武汉大学地球空间环境与大地测量教育部重点实验室, 湖北武汉 430079

收稿日期:2016-01-19 修回日期:2016-04-11 出版日期:2016-07-20 发布日期:2016-07-28
作者简介:赫林(1988-),女,博士生,研究方向为全球高程基准统一。E-mail:helin928926@163.com
基金资助:
测绘地理信息公益性行业科研专项（201512001）；国家973计划（2013CB733301）；国家863计划（2013AA122502）

The Vertical Shift between 1985 National Height Datum and Global Vertical Datum

HE Lin¹, LI Jiancheng^1,2, CHU Yonghai^1,2

1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
2. Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan 430079, China

Received:2016-01-19 Revised:2016-04-11 Online:2016-07-20 Published:2016-07-28
Supported by:
Surveying, Mapping and Geo-information Public Welfare Industry Special Scientific Research Projects(No.201512001);The National Key Basic Research and Development Program of China(973 Program)(No.2013CB733301);The National High-tech Research and Development Program of China(863 Program)(No.2013CB733301)

摘要/Abstract

摘要： 利用不同重力场模型（EIGEN-6C4、EGM2008）和海面高模型（DNSC08、DTU10、DTU13）确定了全球平均海面重力位均值62 636 856.550 7 m²s^-2，加入海面地形改正后得到全球大地水准面重力位均值62 636 858.179 0 m²s^-2。联合EGM2008模型与全国均匀分布的649个GPS/水准数据，根据异常位法、正常高反算法以及高程异常差法，分别计算了我国1985高程基准与全球高程基准之间的垂直偏差，并对3种垂直偏差结果通过加权方法进行了改善。最后，利用两种方法对垂直偏差结果的合理性与正确性进行验证。结果表明我国高程基准面高于全球平均海面0.298 0 m，高于全球大地水准面0.464 2 m。

关键词: 大地水准面, 全球高程基准, GPS/水准, 1985国家高程基准, 垂直偏差

Abstract: The mean geopotential value of the global mean sea surface, 62 636 856.550 7 m²s^-2, is determined based on the global gravity model(EIGEN-6C4、EGM2008) and global mean sea surface height model(DNSC08、DTU10、DTU13).The geoidal potential (62 636 858.179 0 m²s^-2) can be obtained by subtracting the mean sea surface topography from the mean sea surface height. Then, 649 GPS/leveling data,distributed evenly over the mainland of China,are selected to calculate the 1985 national height datum geopotential and the vertical shift using three methods, combined with the global gravity model EGM2008. The vertical shift value is improved by weighting, and utilizing two methods to verify the rationality and correctness after weighting. The final results demonstrate that the 1985 national height datum is 0.298 0 and 0.464 2 m above the mean sea level and the global geoid, respectively.

Key words: geoid, global vertical datum, GPS/leveling, 1985 national height datum, vertical shift

中图分类号:

P224

赫林, 李建成, 褚永海. 国家高程基准与全球高程基准之间的垂直偏差[J]. 测绘学报, 2016, 45(7): 768-774.

HE Lin, LI Jiancheng, CHU Yonghai. The Vertical Shift between 1985 National Height Datum and Global Vertical Datum[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(7): 768-774.

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国家高程基准与全球高程基准之间的垂直偏差

The Vertical Shift between 1985 National Height Datum and Global Vertical Datum

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