Automated detection of satellite contamination in incoherent scatter radar spectra
Anomalous ion line spectra have been identified in many experiments. Such spectra are defined as deviations from the standard symmetric "double-humped" spectra derived from incoherent scatter radar echoes from the upper atmosphere. Some anomalous spectra – where there are sharp enhancement...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00035477 2023-05-15T16:04:43+02:00 Automated detection of satellite contamination in incoherent scatter radar spectra Porteous, J. Samson, A. M. Berrington, K. A. McCrea, I. W. 2003-05 electronic https://doi.org/10.5194/angeo-21-1177-2003 https://noa.gwlb.de/receive/cop_mods_00035477 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00035431/angeo-21-1177-2003.pdf https://angeo.copernicus.org/articles/21/1177/2003/angeo-21-1177-2003.pdf eng eng Copernicus Publications Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-21-1177-2003 https://noa.gwlb.de/receive/cop_mods_00035477 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00035431/angeo-21-1177-2003.pdf https://angeo.copernicus.org/articles/21/1177/2003/angeo-21-1177-2003.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2003 ftnonlinearchiv https://doi.org/10.5194/angeo-21-1177-2003 2022-02-08T22:44:37Z Anomalous ion line spectra have been identified in many experiments. Such spectra are defined as deviations from the standard symmetric "double-humped" spectra derived from incoherent scatter radar echoes from the upper atmosphere. Some anomalous spectra – where there are sharp enhancements of power over restricted height ranges – have been attributed to satellite contamination in the beam path. Here we outline a method for detecting such contamination, and review in detail a few cases where the method enables the identification of anomalous spectra as satellite echoes, subsequently ascribed to specific orbital objects. The methods used here to identify such satellites provide a useful way of distinguishing anomalous spectra due to satellites from those of geophysical origin. Analysis of EISCAT Svalbard Radar data reveals that an average of 8 satellites per hour are found to cross the beam. Based on a relatively small sample of the data set, it appears that at least half of the occurrences of anomalous spectra are caused by satellite contamination rather than being of geophysical origin. Key words. Ionosphere (auroral ionosphere, instruments and techniques) – Radio Science (signal processing) Article in Journal/Newspaper EISCAT Svalbard Niedersächsisches Online-Archiv NOA Svalbard Annales Geophysicae 21 5 1177 1182 |
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English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Porteous, J. Samson, A. M. Berrington, K. A. McCrea, I. W. Automated detection of satellite contamination in incoherent scatter radar spectra |
topic_facet |
article Verlagsveröffentlichung |
description |
Anomalous ion line spectra have been identified in many experiments. Such spectra are defined as deviations from the standard symmetric "double-humped" spectra derived from incoherent scatter radar echoes from the upper atmosphere. Some anomalous spectra – where there are sharp enhancements of power over restricted height ranges – have been attributed to satellite contamination in the beam path. Here we outline a method for detecting such contamination, and review in detail a few cases where the method enables the identification of anomalous spectra as satellite echoes, subsequently ascribed to specific orbital objects. The methods used here to identify such satellites provide a useful way of distinguishing anomalous spectra due to satellites from those of geophysical origin. Analysis of EISCAT Svalbard Radar data reveals that an average of 8 satellites per hour are found to cross the beam. Based on a relatively small sample of the data set, it appears that at least half of the occurrences of anomalous spectra are caused by satellite contamination rather than being of geophysical origin. Key words. Ionosphere (auroral ionosphere, instruments and techniques) – Radio Science (signal processing) |
format |
Article in Journal/Newspaper |
author |
Porteous, J. Samson, A. M. Berrington, K. A. McCrea, I. W. |
author_facet |
Porteous, J. Samson, A. M. Berrington, K. A. McCrea, I. W. |
author_sort |
Porteous, J. |
title |
Automated detection of satellite contamination in incoherent scatter radar spectra |
title_short |
Automated detection of satellite contamination in incoherent scatter radar spectra |
title_full |
Automated detection of satellite contamination in incoherent scatter radar spectra |
title_fullStr |
Automated detection of satellite contamination in incoherent scatter radar spectra |
title_full_unstemmed |
Automated detection of satellite contamination in incoherent scatter radar spectra |
title_sort |
automated detection of satellite contamination in incoherent scatter radar spectra |
publisher |
Copernicus Publications |
publishDate |
2003 |
url |
https://doi.org/10.5194/angeo-21-1177-2003 https://noa.gwlb.de/receive/cop_mods_00035477 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00035431/angeo-21-1177-2003.pdf https://angeo.copernicus.org/articles/21/1177/2003/angeo-21-1177-2003.pdf |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-21-1177-2003 https://noa.gwlb.de/receive/cop_mods_00035477 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00035431/angeo-21-1177-2003.pdf https://angeo.copernicus.org/articles/21/1177/2003/angeo-21-1177-2003.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-21-1177-2003 |
container_title |
Annales Geophysicae |
container_volume |
21 |
container_issue |
5 |
container_start_page |
1177 |
op_container_end_page |
1182 |
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