Títol:
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Remote Geophysical Observatory in Antarctica with HF data transmission: a Review
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Autor/a:
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Pijoan Vidal, Joan Lluís; Altadill Felip, David; Torta Margalef, Joan Miquel; Alsina Pagès, Rosa Maria; Marsal Vinadé, Santiago; Badia Folguera, David
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Altres autors:
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Universitat Ramon Llull. La Salle; Universitat Ramon Llull. Observatori de l'Ebre |
Abstract:
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The geophysical observatory in the Antarctic Spanish Station Juan Carlos I (ASJI) in Livingston Island has been monitoring the magnetic field in the Antarctic region for more than fifteen years. In 2004, a vertical incidence ionospheric sounder completed the observatory, which brings a significant added value in a region with low density of geophysical data. Although the ASJI is only operative during the austral summer, the geomagnetic station records the data throughout the year. An HF transmission system was installed in 2004 in order to have the geomagnetic data available during the whole year. As the power supply is very limited when the station is not operative, we had to design a low-power HF transceiver with a very simple antenna, due to environmental aspects. Moreover, the flow of information was unidirectional, so the modulation had to be extremely robust since there is no retransmission in case of error. This led us to study the main parameters of the ionospheric channel and to design new modulations specially adapted to very low signal to noise scenarios with high levels of interference. In this paper, a review of the results of our remote geophysical observatory and associated transmission system in Antarctica during the last decade is presented. |
Data de publicació:
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07-2014 |
Matèries:
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Ràdio--Freqüència modulada Ionosfera Geomagnetisme |
Drets:
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© L'autor/a
L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by/4.0/ |
Pàgines:
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27 p. |
Tipus de document:
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Article Article - Versió publicada |
DOI:
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https://doi.org/10.3390/rs6087233
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Publicat per:
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MDPI
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Publicat a:
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Remote Sensing. 2014, Vol.6 (Juliol)
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