NASA NTRS · 19900011220
FFT-local gravimetric geoid computation
Abstract
Model computations show that changes of sampling interval introduce only 0.3 cm changes, whereas zero padding provides an improvement of more than 5 cm in the fast Fourier transformation (FFT) generated geoid. For the Global Positioning System (GPS) survey of Franklin County, Ohio, the parameters selected as a result of model computations, allow large reduction in local data requirements while still retaining the cm accuracy when tapering and padding is applied. The results are shown in tables.
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Nagy, Dezso, Fury, Rudolf J.. 1989-06-01. FFT-local gravimetric geoid computation. https://ntrs.nasa.gov/citations/19900011220
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