Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4568
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dc.contributorDepartment of Land Surveying and Geo-Informatics-
dc.creatorLiu, Y-
dc.creatorIz, HB-
dc.creatorChen, YQ-
dc.date.accessioned2014-12-11T08:23:35Z-
dc.date.available2014-12-11T08:23:35Z-
dc.identifier.issn0048-6604-
dc.identifier.urihttp://hdl.handle.net/10397/4568-
dc.language.isoenen_US
dc.publisherAmerican Geophysical Unionen_US
dc.rightsAn edited version of this paper was published by AGU. Copyright 2000 American Geophysical Union. Y. Liu, H. Baki Iz, and Y. Chen (2000), Calibration of zenith hydrostatic delay model for local GPS applications, Radio Science, 35(1), p. 133-140, 10.1029/1999RS900100 (DOI). To view the published open abstract, go to http://dx.doi.org and enter the DOI.en_US
dc.subjectGlobal positioning systemen_US
dc.subjectMathematical modelsen_US
dc.subjectRadiosondesen_US
dc.subjectVaporsen_US
dc.subjectWateren_US
dc.subjectCalibrationen_US
dc.titleCalibration of zenith hydrostatic delay model for local GPS applicationsen_US
dc.typeJournal/Magazine Articleen_US
dc.description.otherinformationAuthor name used in this publication: Y. Chenen_US
dc.identifier.spage133-
dc.identifier.epage140-
dc.identifier.volume35-
dc.identifier.issue1-
dc.identifier.doi10.1029/1999RS900100-
dcterms.abstractDetermination of dry zenith delay, DZD, is important for separating wet zenith delay with high accuracy from Global Positioning System (GPS) measurements. The existing models are usually for the calculation of the zenith hydrostatic delay, ZHD. Because the zenith hydrostatic delay includes the contribution of water vapor and is also not accurate enough, the DZD, approximately replaced by ZHD, will induce ~2 cm error into local GPS applications. In this study we calibrate a popular ZHD model, namely, the Saastamoinen model for local GPS meteorology, using radiosonde data. We test the calibrated model by comparing the predicted delays from the calibrated model against the observed delays from radiosonde data that are not included in the calibration solution. The calibrated model shows 20 mm improvement over the uncalibrated model predictions over the same period. A comparison of the DZDs calculated from GPS measurements over a month period with calibrated and uncalibrated ZHD model predictions shows 15 mm average improvement.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationRadio science, Jan.-Feb. 2000, v. 35, no. 1, p. 133-140-
dcterms.isPartOfRadio science-
dcterms.issued2000-01-
dc.identifier.isiWOS:000085161000012-
dc.identifier.scopus2-s2.0-0033903339-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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