Abstract
The determination of the geoid represents a central task in geodesy. In this matter airborne gravimetry provides a fast and reliable method for geoid determination especially for those regions, which are difficult to survey. In addition with respect to the spectral representation of the earth’s gravity field in terms of spherical harmonics airborne gravimetry is capable to fill the gap with regard to the medium wavelength contribution. With current airborne gravity systems an accuracy of 2–3 mgal (rms), with a resolution of 6–15 km can be achieved. Data processing becomes more significant to meet the demands for a geoid with centimetre-accuracy. Besides the task of pre-processing which results in band-limited gravity disturbances at flight level, the choice of a proper downward continuation method gains in importance.
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