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Controlling Common Mode Stabilization Errors in Airborne Gravity Gradiometry

  • I. N. Tziavos
  • K. P. Schwarz
  • R. V. C. Wong
  • J. Panenka
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 110)

Abstract

The precise measurement of second-order gravitational gradients is dependent on the isolation of the sensor package from rotations with respect to inertial space. To achieve this isolation in first approximation, a high quality inertial platform is employed to carry the sensor package. Imperfections in platform design and in gyros controlling the feedback loop cause initial tilt errors and platform drifts, and thus small time-dependent rotations with respect to inertial space. These rotations generate common mode errors in the gradiometer measurements. The control of these errors by GPS input is discussed in the paper. First, a state space approach to model the platform errors is outlined and the effect of these errors on the second-order gradients is derived. Then, the control of these errors by GPS coordinate updates is investigated in a simulation study. Results indicate that a GPS-controlled platform is an economical solution to the problem of common mode stabilization errors.

Keywords

Inertial Navigation System Gravity Gradient Platform Rotation Airborne Gravity Sensor Package 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag New York, Inc. 1992

Authors and Affiliations

  • I. N. Tziavos
    • 1
  • K. P. Schwarz
    • 2
  • R. V. C. Wong
    • 3
  • J. Panenka
    • 4
  1. 1.Dept. of Geodesy and SurveyingUniv. of ThessalonikiThessalonikiGreece
  2. 2.Dept. of Surveying EngineeringUniv. of CalgaryCalgaryCanada
  3. 3.Western Geophysical DivisionWestern Atlas Int. Inc.HoustonUSA
  4. 4.Canagrav Research LimitedCalgaryCanada

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