Determination of the vertical electron-density profile in ionospheric tomography: experimental results
International audience The reconstruction of the vertical electron-density profile is a fundamental problem in ionospheric tomography. Lack of near-horizontal ray paths limits the information available on the vertical profile, so that the resultant image of electron density is biased in a horizontal...
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ftccsdartic:oai:HAL:hal-00316276v1 2023-11-12T04:16:36+01:00 Determination of the vertical electron-density profile in ionospheric tomography: experimental results Mitchell, C. N. Kersley, L. Heaton, J. A. T. Pryse, S. E. The University of Wales University of Wales 1997 https://hal.science/hal-00316276 https://hal.science/hal-00316276/document https://hal.science/hal-00316276/file/angeo-15-747-1997.pdf en eng HAL CCSD European Geosciences Union hal-00316276 https://hal.science/hal-00316276 https://hal.science/hal-00316276/document https://hal.science/hal-00316276/file/angeo-15-747-1997.pdf info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00316276 Annales Geophysicae, 1997, 15 (6), pp.747-752 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 1997 ftccsdartic 2023-10-21T23:08:39Z International audience The reconstruction of the vertical electron-density profile is a fundamental problem in ionospheric tomography. Lack of near-horizontal ray paths limits the information available on the vertical profile, so that the resultant image of electron density is biased in a horizontal sense. The vertical profile is of great importance as it affects the authenticity of the entire tomographic image. A new method is described whereby the vertical profile is selected using relative total-electron-content measurements. The new reconstruction process has been developed from modelling studies. A range of background ionospheres, representing many possible peak heights, scale heights and electron densities are formed from a Chapman profile on the bottomside with a range of topside profiles. The iterative reconstruction process is performed on all of these background ionospheres and a numerical selection criterion employed to select the final image. The resulting tomographic images show excellent agreement in electron density when compared with independent verification provided by the EISCAT radar. Article in Journal/Newspaper EISCAT Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Mitchell, C. N. Kersley, L. Heaton, J. A. T. Pryse, S. E. Determination of the vertical electron-density profile in ionospheric tomography: experimental results |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The reconstruction of the vertical electron-density profile is a fundamental problem in ionospheric tomography. Lack of near-horizontal ray paths limits the information available on the vertical profile, so that the resultant image of electron density is biased in a horizontal sense. The vertical profile is of great importance as it affects the authenticity of the entire tomographic image. A new method is described whereby the vertical profile is selected using relative total-electron-content measurements. The new reconstruction process has been developed from modelling studies. A range of background ionospheres, representing many possible peak heights, scale heights and electron densities are formed from a Chapman profile on the bottomside with a range of topside profiles. The iterative reconstruction process is performed on all of these background ionospheres and a numerical selection criterion employed to select the final image. The resulting tomographic images show excellent agreement in electron density when compared with independent verification provided by the EISCAT radar. |
author2 |
The University of Wales University of Wales |
format |
Article in Journal/Newspaper |
author |
Mitchell, C. N. Kersley, L. Heaton, J. A. T. Pryse, S. E. |
author_facet |
Mitchell, C. N. Kersley, L. Heaton, J. A. T. Pryse, S. E. |
author_sort |
Mitchell, C. N. |
title |
Determination of the vertical electron-density profile in ionospheric tomography: experimental results |
title_short |
Determination of the vertical electron-density profile in ionospheric tomography: experimental results |
title_full |
Determination of the vertical electron-density profile in ionospheric tomography: experimental results |
title_fullStr |
Determination of the vertical electron-density profile in ionospheric tomography: experimental results |
title_full_unstemmed |
Determination of the vertical electron-density profile in ionospheric tomography: experimental results |
title_sort |
determination of the vertical electron-density profile in ionospheric tomography: experimental results |
publisher |
HAL CCSD |
publishDate |
1997 |
url |
https://hal.science/hal-00316276 https://hal.science/hal-00316276/document https://hal.science/hal-00316276/file/angeo-15-747-1997.pdf |
genre |
EISCAT |
genre_facet |
EISCAT |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00316276 Annales Geophysicae, 1997, 15 (6), pp.747-752 |
op_relation |
hal-00316276 https://hal.science/hal-00316276 https://hal.science/hal-00316276/document https://hal.science/hal-00316276/file/angeo-15-747-1997.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782333688771510272 |