Uganda (UGEOID2020A)
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Authors: R. Forsberg, H. Teitsson |
Created: 2020
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Resp: R. Forsberg
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Description:
UGEOID2020A is a geoid model for Uganda, covering the region from 2°S to 5°N in latitude and from 29° to 36°E in longitude, with a grid resolution of 1'x1'. It is based on the 2020 airborne survey gravity data, the global geopotential model XGM2019 up to degree and order 360, terrain data from the Tandem-X satellite mission, as well as available gravity data in the surrounding countries. The computation was carried out using spherical FFT with a modified Stokes kernel, in the framework of a remove-restore procedure. The conversion from quasi-geoid to geoid was finally performed by using the linear Bouguer correction. The resulting UGEOID2020A geoid model is expected to have an accuracy between 3 and 5 cm across much of Uganda, fitting seven GNSS/levelling benchmarks with an error of 2 cm standard deviation.
References:
R. Forsberg, H. Teitsson (2020). Geoid model of Uganda from airborne gravity survey 2020. Report of DTU Space, Copenhagen, Denmark
R. Forsberg, H. Teitsson, A. Kasenda (2020). Airborne Gravity Survey of Uganda 2020. Report of DTU Space, Copenhagen, Denmark
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