Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/77860
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Land Surveying and Geo-Informatics | - |
dc.creator | Nie, W | - |
dc.creator | Xu, T | - |
dc.creator | Rovira-Garcia, A | - |
dc.creator | Juan Zornoza, JM | - |
dc.creator | Subirana, JS | - |
dc.creator | González-Casado, G | - |
dc.creator | Chen, W | - |
dc.creator | Xu, G | - |
dc.date.accessioned | 2018-08-28T01:35:15Z | - |
dc.date.available | 2018-08-28T01:35:15Z | - |
dc.identifier.uri | http://hdl.handle.net/10397/77860 | - |
dc.language.iso | en | en_US |
dc.publisher | Molecular Diversity Preservation International (MDPI) | en_US |
dc.rights | © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | en_US |
dc.rights | The following publication Nie, W., Xu, T., Rovira-Garcia, A., Juan Zornoza, J. M., Subirana, J. S., González-Casado, G., … Xu, G. (2018). The impacts of the ionospheric observable and mathematical model on the Global Ionosphere Model. Remote Sensing, 10(2), (Suppl. ), 169, - is available athttps://dx.doi.org/10.3390/rs10020169 | en_US |
dc.subject | Ionospheric observable | en_US |
dc.subject | Mathematical model | en_US |
dc.subject | Two-layer | en_US |
dc.subject | Undifferenced ambiguity-fixed mode | en_US |
dc.title | The impacts of the ionospheric observable and mathematical model on the Global Ionosphere Model | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 1 | en_US |
dc.identifier.epage | 13 | en_US |
dc.identifier.volume | 10 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.doi | 10.3390/rs10020169 | en_US |
dcterms.abstract | A high-accuracy Global Ionosphere Model (GIM) is significant for precise positioning and navigating with the Global Navigation Satellite System (GNSS), as well as space weather applications. To obtain a precise GIM, it is critical to take both the ionospheric observable and mathematical model into consideration. In this contribution, the undifferenced ambiguity-fixed carrier-phase ionospheric observable is first determined from a global distribution of permanent receivers. Accuracy assessment with a co-located station experiment shows that the observational errors affecting the ambiguity-fixed carrier-phase ionospheric observables range from 0.10 to 0.35 Total Electron Content Units (TECUs, where 1 TECU = 1016e-/m2 and corresponds to 0.162 m on the Global Positioning System, GPS L1 frequency), indicating that the ambiguity-fixed carrier-phase ionospheric observable is over one order of magnitude more accurate than the carrier-phase leveled-code one (from 1.21 to 3.77 TECUs). Second, to better model the structure of the ionosphere, a two-layer GIM has been built based on the above carrier-phase observable. Preliminary global accuracy evaluation demonstrates that the accuracy of the two-layer GIM is below 1 TECU and about 2 TECUs during low and high solar activity periods. Third, the single-frequency point positioning experiment is adopted to test the ionosphere mitigation effects of the GIMs. Positioning results demonstrate that the single-frequency positioning accuracy can be improved by more than 30% using the undifferenced ambiguity-fixed ionospheric observable-derived two-layer GIM, compared with that using the carrier-phase leveled-code ionospheric observable-based single-layer GIM. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Remote sensing, Feb. 2018, v. 10, no. 2, 169, p. 1-13 | - |
dcterms.isPartOf | Remote sensing | - |
dcterms.issued | 2018-01-25 | - |
dc.identifier.isi | WOS:000427542100016 | - |
dc.identifier.scopus | 2-s2.0-85042524172 | - |
dc.identifier.eissn | 2072-4292 | en_US |
dc.identifier.artn | 169 | en_US |
dc.identifier.rosgroupid | 2017005107 | - |
dc.description.ros | 2017-2018 > Academic research: refereed > Publication in refereed journal | en_US |
dc.description.validate | 201808 bcrc | en_US |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | OA_IR/PIRA | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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Nie_Ionospheric_Observable_Mathematical.pdf | 1.25 MB | Adobe PDF | View/Open |
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