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Distribution and mitigation of higher-order ionospheric effects on precise GNSS processing
dc.contributor.author | Hernández Pajares, Manuel |
dc.contributor.author | Aragón Ángel, María Ángeles |
dc.contributor.author | Defraigne, Pascale |
dc.contributor.author | Bergeot, Nicolas |
dc.contributor.author | Prieto Cerdeira, Roberto |
dc.contributor.author | García Rigo, Alberto |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada IV |
dc.date.accessioned | 2015-07-01T10:56:01Z |
dc.date.available | 2015-07-02T02:31:46Z |
dc.date.created | 2014-04 |
dc.date.issued | 2014-04 |
dc.identifier.citation | Hernandez, M. [et al.]. Distribution and mitigation of higher-order ionospheric effects on precise GNSS processing. "Journal of geophysical research B: solid earth", Abril 2014, vol. 119, núm. 4, p. 3823-3837. |
dc.identifier.issn | 2169-9356 |
dc.identifier.uri | http://hdl.handle.net/2117/28486 |
dc.description.abstract | Higher-order ionospheric effects (I2+) are one of the main limiting factors in very precise Global Navigation Satellite Systems (GNSS) processing, for applications where millimeter accuracy is demanded. This paper summarizes a comprehensive study of the I2+ effects in range and in GNSS precise products such as receiver position and clock, tropospheric delay, geocenter offset, and GNSS satellite position and clock. All the relevant higher-order contributions are considered: second and third orders, geometric bending, and slant total electron content (dSTEC) bending (i.e., the difference between the STEC for straight and bent paths). Using a realistic simulation with representative solar maximum conditions on GPS signals, both the effects and mitigation errors are analyzed. The usage of the combination of multifrequency L band observations has to be rejected due to its increased noise level. The results of the study show that the main two effects in range are the second-order ionospheric and dSTEC terms, with peak values up to 2 cm. Their combined impacts on the precise GNSS satellite products affects the satellite Z coordinates (up to +1 cm) and satellite clocks (more than ±20 ps). Other precise products are affected at the millimeter level. After correction the impact on all the precise GNSS products is reduced below 5 mm. We finally show that the I2+ impact on a Precise Point Positioning (PPP) user is lower than the current uncertainties of the PPP solutions, after applying consistently the precise products (satellite orbits and clocks) obtained under I2+ correction |
dc.format.extent | 15 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències |
dc.subject.lcsh | Geophysics |
dc.subject.other | higher order ionospheric effects |
dc.subject.other | precise geodesy based on GNSS data |
dc.subject.other | precise ionospheric modeling of GNSS observations |
dc.title | Distribution and mitigation of higher-order ionospheric effects on precise GNSS processing |
dc.type | Article |
dc.subject.lemac | Geofísica |
dc.contributor.group | Universitat Politècnica de Catalunya. IonSAT - Grup de determinació Ionosfèrica i navegació per SAtèl·lit i sistemes Terrestres |
dc.identifier.doi | 10.1002/2013JB010568 |
dc.description.peerreviewed | Peer Reviewed |
dc.subject.ams | Classificació AMS::86 Geophysics |
dc.relation.publisherversion | http://onlinelibrary.wiley.com/doi/10.1002/2013JB010568/abstract |
dc.rights.access | Open Access |
local.identifier.drac | 14935667 |
dc.description.version | Postprint (author’s final draft) |
local.citation.author | Hernandez, M.; Aragon-Angel, M.A.; Defraigne, P.; Bergeot, N.; Prieto-Cerdeira, R.; Garcia-Rigo, A. |
local.citation.publicationName | Journal of geophysical research B: solid earth |
local.citation.volume | 119 |
local.citation.number | 4 |
local.citation.startingPage | 3823 |
local.citation.endingPage | 3837 |
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