The wavelet method as an alternative for reducing ionospheric effects from single-frequency GPS receivers

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorde Souza, E. M.
dc.creatorMonico, J. F. G.
dc.date2014-05-20T13:22:33Z
dc.date2016-10-25T16:43:42Z
dc.date2014-05-20T13:22:33Z
dc.date2016-10-25T16:43:42Z
dc.date2007-12-01
dc.date.accessioned2017-04-05T19:54:42Z
dc.date.available2017-04-05T19:54:42Z
dc.identifierJournal of Geodesy. New York: Springer, v. 81, n. 12, p. 799-804, 2007.
dc.identifier0949-7714
dc.identifierhttp://hdl.handle.net/11449/6635
dc.identifierhttp://acervodigital.unesp.br/handle/11449/6635
dc.identifier10.1007/s00190-007-0150-4
dc.identifierWOS:000251145500003
dc.identifierhttp://dx.doi.org/10.1007/s00190-007-0150-4
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/855489
dc.descriptionThe ionospheric effect is one of the major errors in GPS data processing over long baselines. As a dispersive medium, it is possible to compute its influence on the GPS signal with the ionosphere-free linear combination of L1 and L2 observables, requiring dual-frequency receivers. In the case of single-frequency receivers, ionospheric effects are either neglected or reduced by using a model. In this paper, an alternative for single-frequency users is proposed. It involves multiresolution analysis (MRA) using a wavelet analysis of the double-difference observations to remove the short- and medium-scale ionosphere variations and disturbances, as well as some minor tropospheric effects. Experiments were carried out over three baseline lengths from 50 to 450 km, and the results provided by the proposed method were better than those from dual-frequency receivers. The horizontal root mean square was of about 0.28 m (1 sigma).
dc.languageeng
dc.publisherSpringer
dc.relationJournal of Geodesy
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectionosphere variations and disturbances
dc.subjectmultiresolution analysis (MRA)
dc.subjectwavelets
dc.subjectGPS
dc.titleThe wavelet method as an alternative for reducing ionospheric effects from single-frequency GPS receivers
dc.typeOtro


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