Orbital gravity gradiometry through differential micro-accelerometry

Details Orbital gravity gradiometry through differential micro-accelerometry Orbital gravity gradiometry through differential micro-accelerometry

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983buda.iafcx....b&link_type=abstract

International Astronautical Federation, International Astronautical Congress, 34th, Budapest, Hungary, Oct. 10-15, 1983. 10 p.

Astronomy and Astrophysics

Astronomy

Accelerometers, Gravity Gradiometers, Satellite Instruments, Scientific Satellites, Calibrating, Data Processing, Digital Data, Planetary Gravitation, Sensitivity, Servocontrol

Scientific paper

The gradiometer system of the GRADIO mission, a satellite mission dedicated to the mapping of the earth gravity field, is described. The orbital gradiometer consists of several high-sensitivity accelerometers arranged in such a way as to provide the whole second derivative tensor of the potential. The accelerometers are linear three-axis instruments based on the electrostatic suspension of a cubic proof mass. The original concept of on-board continuous calibration makes it possible to achieve differential measurements with the required high accuracy. At an altitude of 200 km, a resolution of 0.001 E.U. for 1-m baseline appears to be feasible.

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