通过大港验潮站坐标确定我国高程基准的垂直偏差

doi:10.11947/j.AGCS.2018.20170051

测绘学报 ›› 2018, Vol. 47 ›› Issue (10): 1295-1300.doi: 10.11947/j.AGCS.2018.20170051

• 大地测量学与导航 • 下一篇

通过大港验潮站坐标确定我国高程基准的垂直偏差

吴富梅^1,2, 魏子卿^1,2, 刘光明^1,2

1. 地理信息工程国家重点实验室, 陕西西安 710054;
2. 西安测绘研究所, 陕西西安 710054

收稿日期:2017-02-06 修回日期:2018-05-20 出版日期:2018-10-20 发布日期:2018-10-24
作者简介:吴富梅(1981-),女,博士,副研究员,主要从事大地基准研究和动态大地测量数据处理。E-mail:wfm8431812@163.com
基金资助:
国家自然科学基金（41374003；41474015；41674025）

Determination of the Vertical Deviation for China Height Datum with Coordinates of Dagang Tidal Gauge

WU Fumei^1,2, WEI Ziqing^1,2, LIU Guangming^1,2

1. State Key Laboratory of Geo-information Engineering, Xi'an 710054, China;
2. Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China

Received:2017-02-06 Revised:2018-05-20 Online:2018-10-20 Published:2018-10-24
Supported by:
The National Natural Science Foundation of China(Nos. 41374003;41474015;41674025)

摘要/Abstract

摘要： 确定局部高程基准相对大地水准面的垂直偏差是统一全球高程基准的重要途径。本文的目的是通过大港验潮站坐标直接确定我国高程基准的垂直偏差。首先给出通过大港验潮站坐标确定我国高程基准垂直偏差的基本原理，然后介绍测定大港验潮站平均海面坐标的方法及过程，接下来通过EGM2008和EIGEN-6C4重力场模型计算出的我国高程基准面的重力位，进而推算获得垂直偏差，并与我国东部地区GPS/水准数据的计算结果进行了比较。经分析发现，EGM2008模型计算结果的可靠性要好于EIGEN-6C4模型；利用大港验潮站坐标计算得到的我国高程基准相对大地水准面的垂直偏差为0.344 m，比利用我国东部261个GPS/水准点数据计算获得的偏差值小0.006 m。

关键词: 高程基准, 大港验潮站, 垂直偏差, GPS/水准数据

Abstract: Determining the vertical deviation for a local height datum relative to the geoid is an important approach to the unification of the Global Vertical Datum. In this paper, we aim at direct determination of the vertical deviation for China Height Datum with the coordinates of Dagang Tidal Gauge. First, the principles for determination of the vertical deviation with the coordinates of Dagang Tidal Gauge are introduced. Then the methods and the processes for measuring and calculating the coordinates of Dagang Tidal Gauge are elaborated. Next EGM2008 and EIGEN-6C4 models are used to calculate the gravity potential with the coordinates of Dagang Tidal Gauge, and the results are compared with those obtained with GPS/Leveling data. It is found that the gravity potential obtained from EGM2008 model is more reliable than that from EIGEN-6C4 model, and the vertical deviation for China Height Datum with the coordinates of Dagang Tidal Gauge is 0.344 m, which is 0.006 m smaller than that with GPS/leveling data.

Key words: height datum, Dagang tidal gauge, vertical deviation, GPS/leveling data

中图分类号:

P228

吴富梅, 魏子卿, 刘光明. 通过大港验潮站坐标确定我国高程基准的垂直偏差[J]. 测绘学报, 2018, 47(10): 1295-1300.

WU Fumei, WEI Ziqing, LIU Guangming. Determination of the Vertical Deviation for China Height Datum with Coordinates of Dagang Tidal Gauge[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(10): 1295-1300.

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通过大港验潮站坐标确定我国高程基准的垂直偏差

Determination of the Vertical Deviation for China Height Datum with Coordinates of Dagang Tidal Gauge

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