QUALIFICATION AND REFINEMENT OF THE IRANIAN GRAVITY DATABASE
Publish place: Geomatics 1384
Publish Year: 1384
Type: Conference paper
Language: English
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Document National Code:
GEO84_34
Index date: 18 December 2005
QUALIFICATION AND REFINEMENT OF THE IRANIAN GRAVITY DATABASE abstract
since 1986 several gravimetric geoid models were published in the Iran region. Based on primary investigation on these gravimetric geoid models, it is found that their relative and absolute accuracies versus GPS/levelling are more or less the same or in some cases worse then the current available global geopotential models (Kiamehr 1997,2001,2003a2003b, 2004 and Kiamehr and sjoberg 2004) Regardless the effect of choosing proper computational method in determination of any geoid models, the quantity and quality of the gravity anomaly database plays a major rule in the final result of them. The main aim of this research is the creation of a more complete and also refined new graviy database for Iran. For this purpose different dataset from different sources are gathered and combined in a single database. Then we start to refine it from possible outliers by using Least squares Collocation (LSC) approach.
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QUALIFICATION AND REFINEMENT OF THE IRANIAN GRAVITY DATABASE authors
Ramin Kiamehr
Royal institute of Technology (KTH), Geodesy Division, SE-۱۰۰ ۴۴ Stockhilm, Sweden
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