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Proceedings Paper

A geocentric vertical datum for coastal geospatial data infrastructure construction
Author(s): Shuangxi Wang; Wenqian Huang; Di Wu; Min Liu
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Paper Abstract

Seamless data for coastal mapping and management is an essential element of coastal spatial data, especially when data sources have different accuracy, age and quality. Many applications of geospatial data in coastal zone require the knowledge of the near-shore topography and bathymetry. The coastal mappers are looking for the methods to merge both topographic and bathymetric data, but the current mismatch in vertical surfaces causes difficulties. In order to obtain accurate geospatial information for coastal geospatial data infrastructure construction, a more stable reference datum should be established. This study introduces a seamless geocentric Vertical Datum, and then an ellipsoidal datum is adopted as vertical reference surface. The reference ellipsoid that is most related to GPS is WGS84 and it is used in this paper as the stable reference surface. In coastal application area, WGS-84 datum will be selected to manage data seamlessly. This reference ellipsoidal is chosen as the fundamental vertical reference surface and transformation surface. The geospatial data cannot be integrated without datum conversion. This paper presents a strategy to seamlessly integrate geospatial data in coastal areas.

Paper Details

Date Published: 10 November 2007
PDF: 5 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 679570 (10 November 2007); doi: 10.1117/12.775278
Show Author Affiliations
Shuangxi Wang, Dalian Naval Academy (China)
Wenqian Huang, Dalian Naval Academy (China)
Di Wu, Dalian Naval Academy (China)
Min Liu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology

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