Determination of Geopotential Differences between Local Vertical Datums and Realization of a World Height System |
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| Authors: | Burša Milan Kouba Jan Müller Achim Raděj Karel True Scott A Vatrt Viliam Vojtíšková Marie |
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| Institution: | (1) Working Group Global Geodesy Topics: Satellite Altimetry Applications (WG GGT). Astronomical Institute, Academy of Sciences of the Czech Republic, Prague, CR |
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| Abstract: | The methodology developed for connecting Local Vertical Datums (LVD) was applied to the Australian Height Datum (AHD) and the North American Vertical Datum (NAVD88). The geopotential values at AHD and NAVD88 were computed and the corresponding vertical offset of 974 mm with rms 51 mm was obtained between the zero reference surfaces defined by AHD and NAVD88. The solution is based on the four primary geodetic parameters, the GPS/levelling sites and the geopotential model EGM96. The Global Height System (or the Major Vertical Datum) can be defined by a geoidal geopotential value used in the solution as the reference value, or by the geopotential value of the LVD, e.g. NAVD88. |
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| Keywords: | Local Vertical Datums geopotential connection |
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