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The article presents the results of studies on the development of methods for obtaining normal heights in Vietnam using the global model EGM2008 and software for processing GNSS measurements. Errors between normal heights calculated from the global geoid model EGM2008 and heights determined from GNSS measurements and geometric leveling to the territory of Vietnam are determined. The method of localization of the global geoid model EGM2008 for the territory of Vietnam is proposed, such a geoid model is practically formed as an EGM2008_ TN file. Test tests of the developed technique and the localized geoid model EGM2008__TN were carried out, showing the possibility of its application for obtaining normal heights from GNSS measurements in Vietnam with leveling accuracy of class IV.

proceedings of the international symposium "engineering and earth sciences: applied and fundamental research" dedicated to the 85th anniversary of h.i. ibragimov (isees 2019)

Creating a Local Quasigeoid Model for the Territory of Vietnam Using the Global Model EGM2008