An adjusted location model for SuperDARN backscatter echoes
The radars that form the Super Dual Auroral Radar Network (SuperDARN) receive scatter from ionospheric irregularities in both the E- and F-regions, as well as the Earth's surface, either ground or sea. For ionospheric scatter, the current SuperDARN standard software considers a straight-line pr...
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ftdoajarticles:oai:doaj.org/article:eaef89bf7ed542019a4264656eb8de09 2023-05-15T18:20:17+02:00 An adjusted location model for SuperDARN backscatter echoes E. X. Liu H. Q. Hu R. Y. Liu Z. S. Wu M. Lester 2012-12-01T00:00:00Z https://doi.org/10.5194/angeo-30-1769-2012 https://doaj.org/article/eaef89bf7ed542019a4264656eb8de09 EN eng Copernicus Publications https://www.ann-geophys.net/30/1769/2012/angeo-30-1769-2012.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-30-1769-2012 0992-7689 1432-0576 https://doaj.org/article/eaef89bf7ed542019a4264656eb8de09 Annales Geophysicae, Vol 30, Pp 1769-1779 (2012) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2012 ftdoajarticles https://doi.org/10.5194/angeo-30-1769-2012 2022-12-31T09:30:46Z The radars that form the Super Dual Auroral Radar Network (SuperDARN) receive scatter from ionospheric irregularities in both the E- and F-regions, as well as the Earth's surface, either ground or sea. For ionospheric scatter, the current SuperDARN standard software considers a straight-line propagation from the radar to the scattering zone with an altitude assigned by a standard height model. The knowledge of the group delay to a scatter volume is not sufficient for an exact determination of the location of the irregularities. In this study, the difference between the locations of the backscatter echoes determined by SuperDARN standard software and by ray tracing has been evaluated, using the ionosonde data collected at Sodankylä, which is in the field-of-view of Hankasalmi SuperDARN radar. By studying elevation angle information of backscattered echoes from the data sets of Hankasalmi radar in 2008, we have proposed an adjusted fitting location model determined by slant range and elevation angle. To test the reliability of the adjusted model, an independent data set is selected in 2009. The result shows that the difference between the adjusted model and the ray tracing is significantly reduced and the adjusted model could provide a more accurate location for backscatter targets. Article in Journal/Newspaper Sodankylä Directory of Open Access Journals: DOAJ Articles Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Annales Geophysicae 30 12 1769 1779 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 E. X. Liu H. Q. Hu R. Y. Liu Z. S. Wu M. Lester An adjusted location model for SuperDARN backscatter echoes |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
The radars that form the Super Dual Auroral Radar Network (SuperDARN) receive scatter from ionospheric irregularities in both the E- and F-regions, as well as the Earth's surface, either ground or sea. For ionospheric scatter, the current SuperDARN standard software considers a straight-line propagation from the radar to the scattering zone with an altitude assigned by a standard height model. The knowledge of the group delay to a scatter volume is not sufficient for an exact determination of the location of the irregularities. In this study, the difference between the locations of the backscatter echoes determined by SuperDARN standard software and by ray tracing has been evaluated, using the ionosonde data collected at Sodankylä, which is in the field-of-view of Hankasalmi SuperDARN radar. By studying elevation angle information of backscattered echoes from the data sets of Hankasalmi radar in 2008, we have proposed an adjusted fitting location model determined by slant range and elevation angle. To test the reliability of the adjusted model, an independent data set is selected in 2009. The result shows that the difference between the adjusted model and the ray tracing is significantly reduced and the adjusted model could provide a more accurate location for backscatter targets. |
format |
Article in Journal/Newspaper |
author |
E. X. Liu H. Q. Hu R. Y. Liu Z. S. Wu M. Lester |
author_facet |
E. X. Liu H. Q. Hu R. Y. Liu Z. S. Wu M. Lester |
author_sort |
E. X. Liu |
title |
An adjusted location model for SuperDARN backscatter echoes |
title_short |
An adjusted location model for SuperDARN backscatter echoes |
title_full |
An adjusted location model for SuperDARN backscatter echoes |
title_fullStr |
An adjusted location model for SuperDARN backscatter echoes |
title_full_unstemmed |
An adjusted location model for SuperDARN backscatter echoes |
title_sort |
adjusted location model for superdarn backscatter echoes |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/angeo-30-1769-2012 https://doaj.org/article/eaef89bf7ed542019a4264656eb8de09 |
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ENVELOPE(26.600,26.600,67.417,67.417) |
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Sodankylä |
geographic_facet |
Sodankylä |
genre |
Sodankylä |
genre_facet |
Sodankylä |
op_source |
Annales Geophysicae, Vol 30, Pp 1769-1779 (2012) |
op_relation |
https://www.ann-geophys.net/30/1769/2012/angeo-30-1769-2012.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-30-1769-2012 0992-7689 1432-0576 https://doaj.org/article/eaef89bf7ed542019a4264656eb8de09 |
op_doi |
https://doi.org/10.5194/angeo-30-1769-2012 |
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Annales Geophysicae |
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30 |
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