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| Titel |
Deformation analysis with Total Least Squares |
| VerfasserIn |
M. Acar, M. T. Özlüdemir, O. Akyilmaz, R. N. Celik, T. Ayan |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 6, no. 4 ; Nr. 6, no. 4 (2006-07-25), S.663-669 |
| Datensatznummer |
250003617
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| Publikation (Nr.) |
 copernicus.org/nhess-6-663-2006.pdf |
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| Zusammenfassung |
| Deformation analysis is one of the main research fields in geodesy.
Deformation analysis process comprises measurement and analysis phases.
Measurements can be collected using several techniques. The output of the
evaluation of the measurements is mainly point positions. In the deformation
analysis phase, the coordinate changes in the point positions are
investigated. Several models or approaches can be employed for the analysis.
One approach is based on a Helmert or similarity coordinate transformation
where the displacements and the respective covariance matrix are transformed
into a unique datum. Traditionally a Least Squares (LS) technique is used
for the transformation procedure. Another approach that could be introduced
as an alternative methodology is the Total Least Squares (TLS) that is
considerably a new approach in geodetic applications. In this study, in
order to determine point displacements, 3-D coordinate transformations based
on the Helmert transformation model were carried out individually by the
Least Squares (LS) and the Total Least Squares (TLS), respectively. The data
used in this study was collected by GPS technique in a landslide area
located nearby Istanbul. The results obtained from these two approaches have
been compared. |
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