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dc.contributor.authorPenna, Nigel
dc.date.accessioned2017-01-30T11:09:27Z
dc.date.available2017-01-30T11:09:27Z
dc.date.created2008-11-12T23:20:51Z
dc.date.issued2001
dc.identifier.citationPenna, Nigel. 2001. Assessment of EGNOS Tropospheric Correction Model. Journal of Navigation 54 (1): 37-55.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/8928
dc.description.abstract

Within the implementation of the European Geo-stationary Navigation Overlay System(EGNOS),a significant residual error in positioning is due to tropospheric delay effects. The EGNOS guidelines recommend that tropospheric delay is modelled using an empirical correction algorithm based on a receiver's height and estimates of meteorological parameters developed from average and seasonal variation data. However, such a simple average and seasonal variation model is unlikely to emulate temporal weather changes exactly. The potential errors involved in the application of the recommended algorithm and the consequent effects on the positioning errors, under typical UK weather conditions, are detailed in this paper. This was achieved by comparing tropospheric delays produced by the EGNOS model, with tropospheric delays estimated from high precision carrier phase GPS, over a one-year period for five UK stations. The RMS EGNOS model zenith tropospheric delay errors ranged from 4.0 to 4.7 cm, with maximum errors ranging from 13.2 to 17.8 cm. The errors were also shown to be spatially correlated. The subsequent effect on position error is shown to be dependent on the satellite elevation cut-off angle adopted and on whether or not the observations are weighted according to the satellite elevation angle.

dc.subjectEGNOS - GPS augmentation - troposphere
dc.titleAssessment of EGNOS Tropospheric Correction Model
dc.typeJournal Article
dcterms.source.volume54
dcterms.source.number1
dcterms.source.monthjan
dcterms.source.startPage37
dcterms.source.endPage55
dcterms.source.titleJournal of Navigation
curtin.note

Copyright 2004 Cambridge University Press

curtin.note

Reprinted with permission.

curtin.note

Originally published in Journal of Navigation, Vol 54, No 1, pp. 37-55, January 2001

curtin.identifierEPR-13
curtin.accessStatusOpen access
curtin.facultyDivision of Resources and Environment
curtin.facultyDepartment of Spatial Sciences


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