New techniques for auroral irregularity studies with COSCAT
Abstract. The COSCAT system enables the detection of E-region auroral backscatter with the EISCAT remote receivers at magnetic aspect angles close to 90. This is achieved by utilising a low-power transmitter stationed in Oulu, Finland. Many important observations of E-region irregularities have been...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.371.6980 2023-05-15T16:04:43+02:00 New techniques for auroral irregularity studies with COSCAT P. Eglitis I. W. Mccrea T. R. Robinson T. Nygreâ N K. Schlegel T. Turunen T. B. Jones The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.6980 http://hal.archives-ouvertes.fr/docs/00/31/64/50/PDF/angeo-16-1241-1998.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.6980 http://hal.archives-ouvertes.fr/docs/00/31/64/50/PDF/angeo-16-1241-1998.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://hal.archives-ouvertes.fr/docs/00/31/64/50/PDF/angeo-16-1241-1998.pdf text ftciteseerx 2016-01-08T01:20:21Z Abstract. The COSCAT system enables the detection of E-region auroral backscatter with the EISCAT remote receivers at magnetic aspect angles close to 90. This is achieved by utilising a low-power transmitter stationed in Oulu, Finland. Many important observations of E-region irregularities have been achieved with this simple experiment. Recent studies have attempted to push the COSCAT system to its experimental limits. Firstly, the CW signal has been phase-modulated with 13-bit Barker codes with baud lengths of 40, 70 and 100 ls. Interpretation of the received power allows the spatial distribution of the auroral scatterers to be determined. The second advance is in the use of a sophisticated correlator program which allows data to be bu€ered within the correlator at very high time resolution. This enables the coherent backscatter power to be sampled every 12.5 ms and the full auto-correlation function to be measured every 100 ms. These measurements allow the COSCAT system to be employed for the ®rst time in an investigation of the growth and decay of the auroral irregularities. Key words. Ionosphere (ionospheric irregularities) á Radio science (Instruments and techniques) Text EISCAT Unknown |
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English |
description |
Abstract. The COSCAT system enables the detection of E-region auroral backscatter with the EISCAT remote receivers at magnetic aspect angles close to 90. This is achieved by utilising a low-power transmitter stationed in Oulu, Finland. Many important observations of E-region irregularities have been achieved with this simple experiment. Recent studies have attempted to push the COSCAT system to its experimental limits. Firstly, the CW signal has been phase-modulated with 13-bit Barker codes with baud lengths of 40, 70 and 100 ls. Interpretation of the received power allows the spatial distribution of the auroral scatterers to be determined. The second advance is in the use of a sophisticated correlator program which allows data to be bu€ered within the correlator at very high time resolution. This enables the coherent backscatter power to be sampled every 12.5 ms and the full auto-correlation function to be measured every 100 ms. These measurements allow the COSCAT system to be employed for the ®rst time in an investigation of the growth and decay of the auroral irregularities. Key words. Ionosphere (ionospheric irregularities) á Radio science (Instruments and techniques) |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
P. Eglitis I. W. Mccrea T. R. Robinson T. Nygreâ N K. Schlegel T. Turunen T. B. Jones |
spellingShingle |
P. Eglitis I. W. Mccrea T. R. Robinson T. Nygreâ N K. Schlegel T. Turunen T. B. Jones New techniques for auroral irregularity studies with COSCAT |
author_facet |
P. Eglitis I. W. Mccrea T. R. Robinson T. Nygreâ N K. Schlegel T. Turunen T. B. Jones |
author_sort |
P. Eglitis |
title |
New techniques for auroral irregularity studies with COSCAT |
title_short |
New techniques for auroral irregularity studies with COSCAT |
title_full |
New techniques for auroral irregularity studies with COSCAT |
title_fullStr |
New techniques for auroral irregularity studies with COSCAT |
title_full_unstemmed |
New techniques for auroral irregularity studies with COSCAT |
title_sort |
new techniques for auroral irregularity studies with coscat |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.6980 http://hal.archives-ouvertes.fr/docs/00/31/64/50/PDF/angeo-16-1241-1998.pdf |
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EISCAT |
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EISCAT |
op_source |
http://hal.archives-ouvertes.fr/docs/00/31/64/50/PDF/angeo-16-1241-1998.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.6980 http://hal.archives-ouvertes.fr/docs/00/31/64/50/PDF/angeo-16-1241-1998.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766400335141666816 |