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The effect of spatial truncation error on integral inversion of satellite gravity gradiometry data
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geoinformatik och Geodesi.
2011 (English)In: Advances in Space Research, ISSN 0273-1177, Vol. 47, no 7, 1238-1247 p.Article in journal (Refereed) Published
Abstract [en]

The satellite gravity gradiometry (SGG) data can be used for local modelling of the Earth's gravity field. In this study, the SGG data in the local north-oriented and orbital frames are inverted to the gravity anomaly at sea level using the second-order partial derivatives of the extended Stokes formula. The emphasis is on the spatial truncation error and the kernel behaviour of the integral formulas in the aforementioned frames. The paper will show that only the diagonal elements of gravitational tensor at satellite level are suitable for recovering the gravity anomaly at sea level. Numerical studies show that the gravity anomaly can be recovered in Fennoscandia with an accuracy of about 6 mGal directly from on-orbit SGG data.

Place, publisher, year, edition, pages
2011. Vol. 47, no 7, 1238-1247 p.
Keyword [en]
Inversion, Kernel behaviour, Orbital frame, Orbital inclination, Perturbation, Tikhonov's regularization
National Category
Computational Mathematics
URN: urn:nbn:se:kth:diva-32268DOI: 10.1016/j.asr.2010.11.035ISI: 000288876600016ScopusID: 2-s2.0-79952317586OAI: diva2:409813
QC 20110411Available from: 2011-04-11 Created: 2011-04-11 Last updated: 2011-04-11Bibliographically approved

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Eshagh, Mehdi
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