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GPS HEIGHT TRANSFORM IN LARGE-SCALE GRAVITY PROSPECTING |
FENG Lin-gang1, ZHANG Suo-xiang2, ZHONG Ren1, ZHAO Jun1, BAOYIN Wu-liji1 |
1. Inner Mongolia Geological Survey Institute,Hohhot 010020,China;
2. Inner Mongolia Land and Resources Exploration and Development Institute,Hohhot 010020,China |
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Abstract In large scale gravity prospecting, when total accuracy of Bouguer gravity anomaly is increased to 0.025×10-5m/s2, the height mean square error of the measuring point must be 0.050 m. Using EGM2008 model and GPS leveling data to fit local quasi-geodic surface, the authors transformed the altitude of the measuring point GPS, thus reaching the accuracy. By using GPS leveling data of a certain area, the authors studied the feasibility of the transforming method. The result shows that the method is completely applicable to large scale gravity prospecting.
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Received: 14 July 2010
Published: 15 October 2011
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