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AUTOMATIC DETERMINATION OF VERTICAL DEFLECTION COMPONENTS FROM GPS AND ZENITHAL STAR OBSERVATIONS

Jacek Kudrys

Abstract

The known vertical deflection values can be utilised to increase geoid’s accuracy. One of the methods of vertical deflection components (ξ, η) determination is to compare astronomic and geodetic coordinates. Presently it is easy possible to obtain geodetic coordinates with high accuracy from GPS observation. In the article the methods of astronomical CCD observation with aid of two different optical systems are discussed. Project realisation is in preliminary stage and there are no results available yet.

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Key concepts: Geodesy, Geodetic datum, Vertical deflection, Global Positioning System, Geoid, Deflection (physics), Remote sensing, Geology