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The accuracy analysis of GPS height transformation based on Chebyshev polynomial
Author(s): 
Pages: 55-58
Year: Issue:  1
Journal: Geotechnical Investigation & Surveying

Keyword:  Chebyshev polynomialEGM2008remove-restore methodGPS height transformationaccuracy analysis;
Abstract: The application of Chebyshev polynomial and remove-restore method based on EGM2008 model for GPS height transformation is discussed in this paper. This method is validated based on GPS/leveling data,and the results are also compared and analyzed with several fitting methods such as plane fitting,curved surface fitting and multidimensional curve fitting. The results show that the accuracy of GPS height transformation based on Chebyshev polynomial is more stable and higher than other methods,and the accuracy of GPS height transformation based on EGM2008 model can be improved in the planar and linear region.
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