Change search
ReferencesLink to record
Permanent link

Direct link
On integral approach to regional gravity field modelling from satellite gradiometric data
KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Geodesy.
2011 (English)In: ACTA GEOPHYS, ISSN 1895-6572, Vol. 59, no 1, 29-54 p.Article in journal (Refereed) Published
Abstract [en]

Solution of the gradiometric boundary value problems leads to three integral formulas. If we are satisfied with obtaining a smooth solution for the Earth's gravity field, we can use the formulas in regional gravity field modelling. In such a case, satellite gradiometric data are integrated on a sphere at satellite level and continued downward to the disturbing potential (geoid) at sea level simultaneously. This paper investigates the gravity field modelling from a full tensor of gravity at satellite level. It studies the truncation bias of the integrals as well as the filtering of noise of data. Numerical studies show that by integrating T (zz) with 1 mE noise and in a cap size of 7A degrees, the geoid can be recovered with an error of 12 cm after the filtering process. Similarly, the errors of the recovered geoids from T (xz,yz) and T (xx-yy, 2xy) are 13 and 21 cm, respectively.

Place, publisher, year, edition, pages
2011. Vol. 59, no 1, 29-54 p.
Keyword [en]
downward continuation, Gaunt's coefficients, geoid, inversion, satellite gradiometry, Wiener filter
National Category
Social and Economic Geography
URN: urn:nbn:se:kth:diva-27700DOI: 10.2478/s11600-010-0033-6ISI: 000284592200003ScopusID: 2-s2.0-78649705901OAI: diva2:379812
QC 20101220Available from: 2010-12-20 Created: 2010-12-20 Last updated: 2010-12-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Eshagh, Mehdi
By organisation
Social and Economic Geography

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 34 hits
ReferencesLink to record
Permanent link

Direct link