Applications of linear and nonlinear models

EW Grafarend, J Awange - Fixed Effects, 2012 - Springer
With the introductory paragraph, we explain the fundamental concepts and basic notions of
this section. For you, the analyst, who has the difficult task to deal with measurements …

Validation of space-wise GOCE gravitational gradient grids using the spectral combination method and GNSS/levelling data

M Pitoňák, M Šprlák, V Ophaug, OCD Omang… - Surveys in …, 2023 - Springer
The launch of gravity-dedicated satellite missions at the beginning of the new millennium led
to an accuracy improvement of global Earth gravity field models (GGMs). One of these …

Local error calibration of EGM08 geoid using GNSS/levelling data

M Eshagh, S Zoghi - Journal of Applied Geophysics, 2016 - Elsevier
The geoid error, computed from EGM08, is unrealistically large due to the continuation of the
spherical harmonic coefficient errors down to the surface of the reference ellipsoid. In this …

A combined global Moho model based on seismic and gravimetric data

M Eshagh, M Bagherbandi, L Sjöberg - Acta Geodaetica et …, 2011 - akjournals.com
The Moho depth can be determined using seismic and/or gravimetric methods. These
methods will not yield the same result as they are based on different hypotheses as well as …

[PDF][PDF] Error calibration of quasi-geoidal, normal and ellipsoidal heights of Sweden using variance component estimation

M Eshagh - Contributions to Geophysics and Geodesy, 2010 - journal.geo.sav.sk
Errors of estimated parameters in an adjustment process should be scaled according to the
size of the estimated residuals or misclosures. After computing a quasigeoid (geoid), its …

On quality of NKG2015 geoid model over the Nordic countries

M Eshagh, J Berntsson - Journal of Geodetic Science, 2019 - degruyter.com
The NKG2015 geoid model covers the Nordic and Baltic countries and has been computed
based on the least-squares modification of Stokes' formula with additive corrections method …

Geoid modelling based on EGM08 and recent Earth gravity models of GOCE

M Eshagh, S Ebadi - Earth Science Informatics, 2013 - Springer
In this paper an estimator for geoid is presented and applied for geoid computation which
considers the topographic and atmospheric effects on the geoid. The total atmospheric effect …

Two alternative techniques for fitting the gravimetric geoid for Egypt

ABDE Hussein, A MAKHLOOF - Contributions to Geophysics and …, 2023 - journal.geo.sav.sk
In this paper, two proposed geoid fitting techniques for Egypt's gravimetrically determined
geoid and Global Positioning System GPS/levelling-derived geoid are introduced. First, any …

Two alternative techniques for fitting the gravimetric geoid for Egypt.

H ABD-ELMOTAAL… - … to Geophysics & Geodesy, 2023 - search.ebscohost.com
In this paper, two proposed geoid fitting techniques for Egypt's gravimetrically determined
geoid and Global Positioning System GPS/levelling-derived geoid are introduced. First, any …

On the reliability and error calibration of some recent Earth's gravity models of GOCE with respect to EGM08

M Eshagh - Acta Geodaetica et Geophysica, 2013 - Springer
The Gravity field and steady-state Ocean Circulation Explorer (GOCE) mission is dedicated
to recover spherical harmonic coefficients of the Earth's gravity field to degree and order of …