Accession Number : AD0781805

Title :   Study to Develop Gradiometer Compensation Techniques.

Descriptive Note : Final rept. 1 Feb 73-31 Jan 74,

Corporate Author : STANFORD UNIV CALIF GUIDANCE AND CONTROL LAB

Personal Author(s) : DeBra,Daniel B. ; Pelks,Eugene J.

Report Date : FEB 1974

Pagination or Media Count : 74

Abstract : The primary goal of the gravity gradiometer (GG) research effort at Stanfrod University has been to establish the feasibility of operation of a GG in a closed loop mode. A parameter estimation technique will allow for online modification (compensation) of the sensor output signal as well as fro trimming of pertinent sensor physical properties so as to improve instrument performance. Gravity gradiometers are required to operate with an accuracy of E.U. This is so demanding that closed loop mode operation may be essential. Although attention has been focused exclusively upon the Hughes rotating gravity gradiometer (RGG), the parameter estimation method developed is applicable, in principle, to any instrument subject to dynamically induced errors. (Author)

Descriptors :   *Gradiometers, Compensation, Closed loop systems, Estimates, Mathematical models, Errors, Recursive filters

Subject Categories : Geodesy
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE