Auroral height-measuring system designed for real-time operation
The altitude and altitude distribution of auroral emissions, such as the [N+2] λ427.8-nm emission, are one result of processes in the ionosphere and magnetosphere during periods of auroral activity. A bistatic height-measuring system (HMS) has been developed with the primary objective of determining...
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craippubl:10.1063/1.1139989 2024-06-16T07:41:16+00:00 Auroral height-measuring system designed for real-time operation Steen, Åke 1988 http://dx.doi.org/10.1063/1.1139989 https://pubs.aip.org/aip/rsi/article-pdf/59/10/2211/19036967/2211_1_online.pdf en eng AIP Publishing Review of Scientific Instruments volume 59, issue 10, page 2211-2219 ISSN 0034-6748 1089-7623 journal-article 1988 craippubl https://doi.org/10.1063/1.1139989 2024-05-17T12:59:08Z The altitude and altitude distribution of auroral emissions, such as the [N+2] λ427.8-nm emission, are one result of processes in the ionosphere and magnetosphere during periods of auroral activity. A bistatic height-measuring system (HMS) has been developed with the primary objective of determining the altitude and latitude of auroral emissions in the magnetic meridian plane through Kiruna, Sweden. Since significant morphological redistributions occur in the aurora within a few seconds, HMS was designed to measure auroral altitudes with a time resolution of 1.5 s. The base line between the two stations was short (13 km), which generated similar-looking meridian profiles of the measured auroral emissions. The meridian profiles were obtained with intensified photodiode arrays, operated in a monochromatic imaging mode. The hardware and software configurations of HMS and essential assumptions for the triangulation procedure are described. HMS is especially adapted to measure during periods of disturbances in auroral arcs, e.g., eastward-traveling folds. The estimated optimal accuracies of the determinations of the latitudinal position of an auroral arc and the altitude of an identified auroral point are ±0.01° and ±1 km, respectively. Article in Journal/Newspaper Kiruna AIP Publishing Kiruna Review of Scientific Instruments 59 10 2211 2219 |
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English |
description |
The altitude and altitude distribution of auroral emissions, such as the [N+2] λ427.8-nm emission, are one result of processes in the ionosphere and magnetosphere during periods of auroral activity. A bistatic height-measuring system (HMS) has been developed with the primary objective of determining the altitude and latitude of auroral emissions in the magnetic meridian plane through Kiruna, Sweden. Since significant morphological redistributions occur in the aurora within a few seconds, HMS was designed to measure auroral altitudes with a time resolution of 1.5 s. The base line between the two stations was short (13 km), which generated similar-looking meridian profiles of the measured auroral emissions. The meridian profiles were obtained with intensified photodiode arrays, operated in a monochromatic imaging mode. The hardware and software configurations of HMS and essential assumptions for the triangulation procedure are described. HMS is especially adapted to measure during periods of disturbances in auroral arcs, e.g., eastward-traveling folds. The estimated optimal accuracies of the determinations of the latitudinal position of an auroral arc and the altitude of an identified auroral point are ±0.01° and ±1 km, respectively. |
format |
Article in Journal/Newspaper |
author |
Steen, Åke |
spellingShingle |
Steen, Åke Auroral height-measuring system designed for real-time operation |
author_facet |
Steen, Åke |
author_sort |
Steen, Åke |
title |
Auroral height-measuring system designed for real-time operation |
title_short |
Auroral height-measuring system designed for real-time operation |
title_full |
Auroral height-measuring system designed for real-time operation |
title_fullStr |
Auroral height-measuring system designed for real-time operation |
title_full_unstemmed |
Auroral height-measuring system designed for real-time operation |
title_sort |
auroral height-measuring system designed for real-time operation |
publisher |
AIP Publishing |
publishDate |
1988 |
url |
http://dx.doi.org/10.1063/1.1139989 https://pubs.aip.org/aip/rsi/article-pdf/59/10/2211/19036967/2211_1_online.pdf |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna |
genre_facet |
Kiruna |
op_source |
Review of Scientific Instruments volume 59, issue 10, page 2211-2219 ISSN 0034-6748 1089-7623 |
op_doi |
https://doi.org/10.1063/1.1139989 |
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Review of Scientific Instruments |
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59 |
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10 |
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2211 |
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2219 |
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1802008414950260736 |