Acta Geodaetica et Geophysica Hungarica
Volume/Issue:
Volume 45: Issue 4
Efficiency of robust methods and tests for outliers for geodetic adjustment models
Authors:
R. Erenoglu Yildiz Technical University Department of Geomatics Engineering 34210 Davutpaşa, Istanbul Turkey

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S. Hekimoglu Yildiz Technical University Department of Geomatics Engineering 34210 Davutpaşa, Istanbul Turkey

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Pages:
426–439
Online Publication Date:
27 Nov 2010
Publication Date:
01 Dec 2010
Article Category:
Journal Article
DOI:
https://doi.org/10.1556/ageod.45.2010.4.3
Keywords:
conventional tests; deformation monitoring; geodetic measurement; parameter estimation; reliability; robust method
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Geodetic measurements are commonly used for monitoring volcanic activities and crustal motions. Together with paleoseismic and other geologic observations, geodetic data are central in long-term forecast of earthquake hazards. Presence of outliers in geodetic data strongly affects least squares principle, which are extensively used for data analysis and modeling in geodesy. Thus, the positions of the geodetic points are computed as biased. Robust methods are techniques used to construct estimates describing well data majority. In this study, some robust methods and conventional tests for outliers have been tested on a number of linear and nonlinear geodetic adjustment models. The results are presented to illustrate the effectiveness of the methods. Furthermore, we discuss how the effectiveness of the methods changes depending on various key parameters for geodetic networks, i.e. the number of outliers, the magnitude of outliers, the degree of freedom, the number of observation and number of unknowns.

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Cover Acta Geodaetica et Geophysica Hungarica
Acta Geodaetica et Geophysica Hungarica
Print ISSN:
1217-8977
Online ISSN:
1587-1037

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Acta Geodaetica et Geophysica
Language English
Size B5
Year of
Foundation		 2013
Volumes
per Year		 1
Issues
per Year		 4
Founder Magyar Tudományos Akadémia
Founder's
Address		 H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó Springer
Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 2213-5812 (Print)
ISSN 2213-5820 (Online)

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