The South African Geoid 2010 : SAGEOID 10 by
The South African Geoid 2010 : SAGEOID 10 by
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南非大地水准面 2010:SAGEOID 10
DOI:
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发表时间:
2010
期刊:
影响因子:
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通讯作者:
G. Chandler
中科院分区:
文献类型:
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作者:
G. Chandler
GPS (and other GNSS systems) provide fully three-dimensional positions – latitude, longitude and height. The reference surface used is the WGS84 ellipsoid, and heights are heights above this surface – ellipsoidal heights. However, the type of height that is needed is a height above the geoid, which corresponds closely to mean sea level (MSL). The difference between these two types of heights varies spatially (it can reach 120 m) and is equivalent to the separation between the geoid and the ellipsoid – the geoidal height.