Abstract
Abstract : Design and development of a portable rotating gravitational gradiometer has been continued. A breadboard laboratory model of the gradiometer was constructed and tested. Testing has indicated that angular rate isolation and spin speed control represent major factors in maintaining noise free sensor operation. Analysis has been performed on the sensor's succeptability to angular rate and a feasible rate isolation method is outlined. Preliminary design studies for an isoelastic servo-balanced arm have been completed and are discussed. A preliminary design specification for an appropriate inertial platform for use in an airborne application was generated, and vendor liaison was established to obtain initial response to this specification. Studies were also performed on sensor angular position errors, noise and clutter due to proximate masses, and first stage vibration isolation methods.
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