Dongmei, XU Houze. Determination of Geoid Using GPS Leveling and Gravity Data[J]. Geomatics and Information Science of Wuhan University, 2011, 36(5): 621-624.
Citation:
Dongmei, XU Houze. Determination of Geoid Using GPS Leveling and Gravity Data[J]. Geomatics and Information Science of Wuhan University, 2011, 36(5): 621-624.
Dongmei, XU Houze. Determination of Geoid Using GPS Leveling and Gravity Data[J]. Geomatics and Information Science of Wuhan University, 2011, 36(5): 621-624.
Citation:
Dongmei, XU Houze. Determination of Geoid Using GPS Leveling and Gravity Data[J]. Geomatics and Information Science of Wuhan University, 2011, 36(5): 621-624.
1 Institute of Geodesy and Geophysics,Chinese Academy of Sciences,340 Xudong Street,Wuhan 430077,China;2 Key Laboratory of Dynamical Geodesy,Institute of Geodesy and Geophysics,Chinese Academy of Sciences,340 Xudong Street,Wuhan 430077,China;3 School of Graduate,Chinese Academy of Sciences,A19 Yuquan Road,Shijingshan District,Beijing 100049,China
The difference between GPS leveling and gravity geoid is causedlies in by not only the different datums that they refer to respectively,but also the errors inevitably contained in the gravity and GPS leveling observations.The relationship between the transformation parameters of datums and the difference of these two observation technologies is established,and the parameters and residuals are calculated based on the least-square criterion.When GPS leveling data is more accuracy than gravity data,the geoid can be determined easily by this joint solution model,only considering the errors of gravity observations.
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