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Analytical dynamic orbit improvement for the evaluation of geodetic-geodynamic satellite data

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Summary

Given an analytical solution (solution of the equations of motion using analytical integration techniques) an integration of the variational equations is not necessary but simply a differentiation of the analytical solution. Based on a high-precision analytical solution explicit expressions for the coefficients of the observation equations to improve state variables and force model parameters have been derived.

The definition of suitable unknowns for a pure dynamic orbital improvement can be based then on an analysis of the information content of the data at hand by using those expressions.

Regarding the Fourier series structure of orbital perturbations as well as the special properties of crossover difference data, the proposed technique is particularly favourable for an evaluation of Remote Sensing Data such as altimeter, SST and gradiometer data from satellites in repeating orbits.

After a general discussion of the observation equations for crossover data our present results using GEOSAT altimeter data are discussed as one example for applications. Some short remarks about further applications are given.

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Authors and Affiliations

  1. Institut für Geodäsie und Photogrammetrie, TU Berlin, Straße des 17. Juni 135, D-10623, Berlin, Germany

    Ch. Cui & D. Lelgemann

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  1. Ch. Cui
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  2. D. Lelgemann
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Cui, C., Lelgemann, D. Analytical dynamic orbit improvement for the evaluation of geodetic-geodynamic satellite data. Journal of Geodesy 70, 83–97 (1995). https://doi.org/10.1007/BF00863420

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  • DOI: https://doi.org/10.1007/BF00863420

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