Friday 26 August 2005

G6
1000-1200 hours

496
A new filtering method for Lacoste-Romber airborne gravimetry through an integral transform
Barriot, Jean-Pierre¹, Abbasi, Madjid¹, Verdun, Jerome², Duquenne, Henri²
1 Observatoire Midi-Pyrenees / GRGS, Toulouse, France
2 ENSG/LAREG
Author email: jean-pierre.barriot@cnes.fr
We propose a new filtering method for airborne gravity data acquired with a Lacoste-romberg gravimeter, based on the transformation of the differential equation of the beam into an integral equation. This new approach permits an easy introduction of the a priori variance-covariance matrices of the expected gravity signal, and then an optimal separation between the inertial and potential contibutions to the beam motion. We give an example of modeling over the French Alps.

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