Calibration errors on experimental slant total electron content (TEC) determined with GPS

The Global Positioning System (GPS) has become a powerful tool for ionospheric studies. In addition, ionospheric corrections are necessary for the augmentation systems required for Global Navigation Satellite Systems (GNSS) use. Dual-frequency carrier-phase and code-delay GPS observations are combin...

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Detalles Bibliográficos
Autores principales: Ciraolo, L., Azpilicueta, Francisco Javier, Brunini, Claudio Antonio, Meza, Amalia Margarita, Radicella, Sandro M.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2006
Materias:
TEC
GPS
DCB
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/133670
Aporte de:
id I19-R120-10915-133670
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Astronomía
Total electron content
TEC
GPS
Inter-frequency bias
Differential code bias
DCB
Levelling carrier to code TEC
spellingShingle Física
Astronomía
Total electron content
TEC
GPS
Inter-frequency bias
Differential code bias
DCB
Levelling carrier to code TEC
Ciraolo, L.
Azpilicueta, Francisco Javier
Brunini, Claudio Antonio
Meza, Amalia Margarita
Radicella, Sandro M.
Calibration errors on experimental slant total electron content (TEC) determined with GPS
topic_facet Física
Astronomía
Total electron content
TEC
GPS
Inter-frequency bias
Differential code bias
DCB
Levelling carrier to code TEC
description The Global Positioning System (GPS) has become a powerful tool for ionospheric studies. In addition, ionospheric corrections are necessary for the augmentation systems required for Global Navigation Satellite Systems (GNSS) use. Dual-frequency carrier-phase and code-delay GPS observations are combined to obtain ionospheric observables related to the slant total electron content (sTEC) along the satellite-receiver line-of-sight (LoS). This observable is affected by inter-frequency biases [IFB; often called differential code biases (DCB)] due to the transmitting and the receiving hardware. These biases must be estimated and eliminated from the data in order to calibrate the experimental sTEC obtained from GPS observations. Based on the analysis of single differences of the ionospheric observations obtained from pairs of co-located dual-frequency GPS receivers, this research addresses two major issues: (1) assessing the errors translated from the code-delay to the carrier-phase ionospheric observable by the so-called levelling process, applied to reduce carrier-phase ambiguities from the data; and (2) assessing the short-term stability of receiver IFB. The conclusions achieved are: (1) the levelled carrier-phase ionospheric observable is affected by a systematic error, produced by code-delay multi-path through the levelling procedure; and (2) receiver IFB may experience significant changes during 1 day. The magnitude of both effects depends on the receiver/antenna configuration. Levelling errors found in this research vary from 1.4 total electron content units (TECU) to 5.3 TECU. In addition, intra-day vaiations of code-delay receiver IFB ranging from 1.4 to 8.8 TECU were detected.
format Articulo
Articulo
author Ciraolo, L.
Azpilicueta, Francisco Javier
Brunini, Claudio Antonio
Meza, Amalia Margarita
Radicella, Sandro M.
author_facet Ciraolo, L.
Azpilicueta, Francisco Javier
Brunini, Claudio Antonio
Meza, Amalia Margarita
Radicella, Sandro M.
author_sort Ciraolo, L.
title Calibration errors on experimental slant total electron content (TEC) determined with GPS
title_short Calibration errors on experimental slant total electron content (TEC) determined with GPS
title_full Calibration errors on experimental slant total electron content (TEC) determined with GPS
title_fullStr Calibration errors on experimental slant total electron content (TEC) determined with GPS
title_full_unstemmed Calibration errors on experimental slant total electron content (TEC) determined with GPS
title_sort calibration errors on experimental slant total electron content (tec) determined with gps
publishDate 2006
url http://sedici.unlp.edu.ar/handle/10915/133670
work_keys_str_mv AT ciraolol calibrationerrorsonexperimentalslanttotalelectroncontenttecdeterminedwithgps
AT azpilicuetafranciscojavier calibrationerrorsonexperimentalslanttotalelectroncontenttecdeterminedwithgps
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AT mezaamaliamargarita calibrationerrorsonexperimentalslanttotalelectroncontenttecdeterminedwithgps
AT radicellasandrom calibrationerrorsonexperimentalslanttotalelectroncontenttecdeterminedwithgps
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