 |
| Titel |
Radio tomographic imaging of sporadic-E layers during SEEK-2 |
| VerfasserIn |
P. A. Bernhardt, C. A. Selcher, C. Siefring, M. Wilkens, C. Compton, G. Bust, M. Yamamoto, S. Fukao, O. Takayuki, M. Wakabayashi, H. Mori |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 23, no. 7 ; Nr. 23, no. 7 (2005-10-13), S.2357-2368 |
| Datensatznummer |
250015310
|
| Publikation (Nr.) |
 copernicus.org/angeo-23-2357-2005.pdf |
|
|
|
|
|
| Zusammenfassung |
During the SEEK-2 Rocket Campaign in August 2002, a Dual Band Beacon (DBB)
transmitting to Ground Receivers provided unique data on E-Region electron
densities. Information from two rocket beacons and four ground receivers
yielded multiple samples of E-region horizontal and vertical variations. The
radio beacon measurements were made at four sites (Uchinoura, Tarumizu,
Tanegashima, Takazaki) in Japan for two rockets (S310-31 and S310-32)
launched by the Institute of Space and Aeronautical Science (ISAS). Analysis
was completed for four sets of beacon data to provide electron density
images of sporadic-E layers. Signals from the two-frequency beacons on the
SEEK-2 rockets were processed to yield total electron content (TEC) data that
was converted into electron density measurements. Wide variations in layer
structures were detected. These included horizontal sporadic-E variations,
vertical profiles of double, single, and weak layers. The radio beacon
measurements were shown to be in agreement with the in-situ SEEK-2 sensors. The
first tomographic image of a sporadic-E layer was produced from the data.
The rocket beacon technique was shown to be an excellent tool to study
sporadic-E layers because absolute TEC accuracy of 0.01 TEC Units can be
easily obtained and, with proper receiver placement, electron density images
can be produced using computerized ionospheric tomography with better than
1km horizontal and vertical resolution.
Keywords. Ionospheric irregularities – Instruments and
techniques – Mid-latitude ionosphere |
| |
|
| Teil von |
|
|
|
|
|
|
|
|