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Astro-geodetic

Astro-geodetic methods are a group of important methods in geodesy, satellite techniques and astrometry.

The classical astro-geodetic leveling is a reasonably accurate method to derive the terrestrial geoid, provided a starting point is given. It combines the precise determination of the true zenith (geographic or astronomical positioning) with geodetic measurements and coordinate calculations.

Astro-geodetic geoid solutions are computed by the spatial integration of the two components of vertical deflections.

Modern astro-geodetic methods also use satellite measurements (optical and electronic, LASER etc.), with charge-coupled device (CCD) observations, and combinations of terrestrial and GPS data (especially for precise heighting and for the stabilisation of geoid solutions).






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