Evaluation of
EGM08 using GPS and leveling heights in Greece

dc.contributor.author	Κωτσάκης, Χριστόφορος	el
dc.contributor.author	Κατσάμπαλος, Κωνσταντίνος	el
dc.contributor.author	Αμπατζίδης, Μ.	el
dc.contributor.author	Γιαννίου, Μιχαήλ	el
dc.date.accessioned	2015-05-21T19:00:43Z
dc.date.available	2015-05-21T19:00:43Z
dc.date.issued	2015-05-21
dc.identifier.uri	http://hdl.handle.net/11400/10853
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://link.springer.com	en
dc.subject	Global Positioning System
dc.subject	HEPOS
dc.subject	Hellenic Positioning System
dc.subject	Earth Gravitational Model
dc.title	Evaluation of EGM08 using GPS and leveling heights in Greece	en
heal.type	conferenceItem
heal.classification	Topography
heal.classification	Geodesy
heal.classification	Τοπογραφία
heal.classification	Γεωδαισία
heal.classificationURI	http://skos.um.es/unescothes/C04078
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85053969
heal.classificationURI	N/A-Τοπογραφία
heal.classificationURI	N/A-Γεωδαισία
heal.identifier.secondary	DOI: 10.1007/978-3-642-10634-7_64
heal.language	en
heal.access	campus
heal.publicationDate	2008-06-23
heal.bibliographicCitation	Kotsakis, C., Katsambalos, K., Ampatzidis, D. and Gianniou, M. (2008) Evaluation of EGM08 using GPS and leveling heights in Greece. In International Symposium on Gravity, Geoid and Earth Observation, Proceedings. 23rd to 27th June 2008. Chania, p.481-488	en
heal.abstract	This paper presents an overview of the evaluation results for the new Earth Gravitational Model (EGM08) that was recently released by the US National Geospatial- Intelligence Agency, using GPS and leveled orthometric heights in the area of Greece. Various comparisons of geoid undulations obtained from the EGM08 model and other combined geopotential models, in conjunction with GPS/leveling data, have been performed in both absolute (at individual points) and relative (for baselines of varying length) sense. The test network covers the entire part of the Greek mainland and it consists of more than 1,500 ben- chmarks that belong to the Hellenic national triangulation network, with direct leveling ties to the Hellenic vertical reference frame. The spatial positions of these benchmarks have been recently determined at cm-level accuracy (with respect to ITRF2000) through an extensive national GPS campaign that was organized in the frame of the HEPOS project. Our results suggest that EGM08 offers a major improvement (more than 50%) in the agreement level among geoidal, ellipsoidal and orthometric heights over the mainland part of Greece, compared to the performance of previous global geopotential models for the same area.	en
heal.publisher	Springer	en
heal.fullTextAvailability	true
heal.conferenceName	International Symposium on Gravity, Geoid and Earth Observation	en
heal.conferenceItemType	poster