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A comparison of satellite Doppler and gravimetric geoid undulations considering terrain-corrected gravity data (1984)

Rapp, R. H. ; Wichiencharoen, C.

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Publication Date: 2019-06-28

Description: Geoid undulations derived from Doppler satellite positioning are compared with corresponding values derived from terrestrial and satellite information using three different procedures. Doppler undulations are compared with uncorrected gravimetric undulations, and systematic differences of 1.6 m and 0.4 m are found for western and eastern U.S. stations, respectively. The systematic difference of 1.6 m was reduced to 0.1 m when terrain-related corrections were applied. Undulations computed from a spherical harmonic expansion to degree 180 yielded standard deviations only slightly poorer than the combined data. A more systematic difference in the western than in the eastern stations remained.

Keywords: GEOPHYSICS

Type: Journal of Geophysical Research (ISSN 0148-0227); 89; 1105-111

Format: text

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