Global ionospheric models in three dimensions from GPS measurements: Numerical simulation
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional Autónoma de México
2000
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| _version_ | 1876465844393869312 |
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| author | Amalia Meza |
| author_facet | Amalia Meza |
| contents | Global ionospheric models in three dimensions from GPS measurements: Numerical simulation Amalia Meza Claudio Brunini Alfred Kleusberg Ciencias de la Tierra models Ionosphere numerical simulation A network of globally distributed dual frequency Global Position System (GPS) receivers is used to compute global maps ofthe vertical total electron content (VTEC) distribution of the ionosphere. A mapping function is used to convert the total electroncontent along the path of the signal into vertical total electron content, which can be represented by two dimensional Taylor seriesor spherical functions.This vertical variation cannot be recovered directly from GPS data measured with ground based receivers. The techniquewas tested with the launch of the GPS - MET mission on April 3, 1995. Combining the trans-ionospheric measurements fromground based receivers with the data collected in the GPS-MET experiment we attempt to model the electron content based on theglobal behaviour of the ionosphere. Using least square estimation we determine the unknown coefficients of the electron contentmodel. The results suggest that, even without a global geometrical distribution, the space receiver is useful to model the mean highelectron content variation. 2000 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56839103 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.39 |
| format | Artículo científico |
| id | redalyc_56839103 |
| institution | Redalyc |
| language | en |
| publishDate | 2000 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Global ionospheric models in three dimensions from GPS measurements: Numerical simulation Amalia Meza Ciencias de la Tierra models Ionosphere numerical simulation Global ionospheric models in three dimensions from GPS measurements: Numerical simulation Amalia Meza Claudio Brunini Alfred Kleusberg Ciencias de la Tierra models Ionosphere numerical simulation A network of globally distributed dual frequency Global Position System (GPS) receivers is used to compute global maps ofthe vertical total electron content (VTEC) distribution of the ionosphere. A mapping function is used to convert the total electroncontent along the path of the signal into vertical total electron content, which can be represented by two dimensional Taylor seriesor spherical functions.This vertical variation cannot be recovered directly from GPS data measured with ground based receivers. The techniquewas tested with the launch of the GPS - MET mission on April 3, 1995. Combining the trans-ionospheric measurements fromground based receivers with the data collected in the GPS-MET experiment we attempt to model the electron content based on theglobal behaviour of the ionosphere. Using least square estimation we determine the unknown coefficients of the electron contentmodel. The results suggest that, even without a global geometrical distribution, the space receiver is useful to model the mean highelectron content variation. 2000 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56839103 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.39 |
| title | Global ionospheric models in three dimensions from GPS measurements: Numerical simulation |
| topic | Ciencias de la Tierra models Ionosphere numerical simulation |
| url | https://www.redalyc.org/articulo.oa?id=56839103 |