Accelerometer / GPS Integration for Strapdown Airborne Gravimetry: First Test Results
It is tried to recover high resolution gravitational information from airborne gravimetry from a new approach integrating i. GPS observations from an Ashtech3DF receiver for position and its derivatives and attitude and ii. accelerometer observations from a normal Sundstrand QA-3000. Both sensors were strapped to a slow and low flying aircraft without use of a platform. The hardware supplemented by some useful electronics and an integrated Kaiman filter including a gravity shaping filter has the potential for mGal accuracy and few km resolution. The paper describes concept, system realized, tests and discusses some of the issues inherent to this approach.
KeywordsTorque Covariance Coherence Lution Triad
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