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| Titel |
An adjusted location model for SuperDARN backscatter echoes |
| VerfasserIn |
E. X. Liu, H. Q. Hu, R. Y. Liu, Z. S. Wu, Mark Lester |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 30, no. 12 ; Nr. 30, no. 12 (2012-12-21), S.1769-1779 |
| Datensatznummer |
250017302
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| Publikation (Nr.) |
 copernicus.org/angeo-30-1769-2012.pdf |
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| Zusammenfassung |
| 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. |
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