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The direct topographical correction in gravimetric geoid determination by the Stokes–Helmert method
Abstract. The direct topographical correction is composed of both local effects and long-wavelength contributions. This implies that the classical integral formula for determining the direct effect may have some numerical problems in representing these different signals. On the other hand, a representation by a set of harmonic coefficients of the topography to, say, degree and order 360 will omit significant short-wavelength signals. A new formula is derived by combining the classical formula and a set of spherical harmonics. Finally, the results of this solution are compared with the Moritz topographical correction in a test area.
The direct topographical correction in gravimetric geoid determination by the Stokes–Helmert method
Abstract. The direct topographical correction is composed of both local effects and long-wavelength contributions. This implies that the classical integral formula for determining the direct effect may have some numerical problems in representing these different signals. On the other hand, a representation by a set of harmonic coefficients of the topography to, say, degree and order 360 will omit significant short-wavelength signals. A new formula is derived by combining the classical formula and a set of spherical harmonics. Finally, the results of this solution are compared with the Moritz topographical correction in a test area.
The direct topographical correction in gravimetric geoid determination by the Stokes–Helmert method
Nahavandchi, H. (author)
Journal of Geodesy ; 74
2000
Article (Journal)
English
BKL:
38.73
Geodäsie
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