Venus gravity - A high-resolution map

Details Venus gravity - A high-resolution map Venus gravity - A high-resolution map

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.7173r&link_type=abstract

Journal of Geophysical Research, vol. 86, Aug. 10, 1981, p. 7173-7179.

Other

29

Gravitational Fields, Planetary Gravitation, Planetary Mapping, Radio Tracking, Spacecraft Tracking, Venus (Planet), Data Reduction, Kalman Filters, Mass Distribution, Pioneer Venus 1 Spacecraft, Planetary Mass, Topography, Venus Surface, Venus, Gravity, Mapping, Maps, Doppler Observations, Analysis, Radar, Pioneer Venus Orbiter, Gravitational Potential, Procedure, Topography, Magnitude, Compensation, Data, Altimetry, Longitude, Pvo, Comparisons, Data Reduction

Scientific paper

The Doppler data from the radio tracking of the Pioneer Venus Orbiter (PVO) have been used in a two-stage analysis to develop a high-resolution map of the gravitational potential of Venus, represented by a central mass and a surface mass density. The two-stage procedure invokes a Kalman filter-smoother to determine the orbit of the spacecraft, and a stabilized linear inverter to estimate the surface mass density. The resultant gravity map is highly correlated with the topographic map derived from the PVO radar altimeter data. However, the magnitudes of the gravity variations are smaller than would be expected if the topography were uncompensated, indicating that at least partial compensation has taken place.

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