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Least-Squares Modification of Stokes' Formula with EGM08
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geoinformatik och Geodesi. (Geodesy)
2009 (English)In: Geodesy and Cartography, ISSN 1648-3502, Vol. 35, no 4, 111-117 p.Article in journal (Refereed) Published
Abstract [en]

Least-squares modification is an optimal method of modifying Stokes' formula. This method can be categorized as a generalization of the spectral combination methods as it considers the truncation error of the integral formulas in its combination process. In short, this method involves the modification parameters based on minimizing the error of terrestrial gravimetric data, satellite data and the truncation error of the integral. In this respect, the choice of the geopotential model definitely plays an important role. This paper uses the recent combined geopotential model EGM08 for generating the spectra of gravity anomaly and its error. Numerical results show that EGM08 improves least-squares modification by about 10 cm comparing to the traditional way.

Place, publisher, year, edition, pages
Lithuani: Versita , 2009. Vol. 35, no 4, 111-117 p.
Keyword [en]
biased estimator, unbiased estimator, degree variance, global root mean squares error, optimization, spectral combination
National Category
URN: urn:nbn:se:kth:diva-61406DOI: 10.3846/1392-1541.2009.35.111-117ScopusID: 2-s2.0-73249123091OAI: diva2:479040
QC 20120130Available from: 2012-01-17 Created: 2012-01-17 Last updated: 2012-01-30Bibliographically approved

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Eshagh, Mehdi
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Geoinformatik och Geodesi

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