New capabilities of the upgraded EISCAT high-power HF facility

Published version. Source at http://doi.org/10.1002/2016RS006093. The high-power HF (high-frequency) facility (commonly known as Heating) near Tromsø, Norway, which is an essential part of the European Incoherent Scatter Scientific Association, has been upgraded in certain key areas in recent years....

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Bibliographic Details
Published in:Radio Science
Main Authors: Rietveld, Michael T, Senior, Andrew, Markkanen, Jussi, Westman, Assar
Format: Article in Journal/Newspaper
Language:English
Published: American Geophysical Union 2016
Subjects:
VDP::Matematikk og Naturvitenskap: 400
VDP::Mathematics and natural science: 400::Information and communication science: 420
high-frequency
Tromsø
Norway
European Incoherent Scatter Scientific Association
high-power HF facility
transmitters
feed-system
antennas
radio frequency
waveform generation
computer control
monitoring
electron gyrofrequency
mesospheric
magnetospheric
probing
antenna gain
EISCAT
Online Access:https://hdl.handle.net/10037/10803
https://doi.org/10.1002/2016RS006093
Description
Summary:Published version. Source at http://doi.org/10.1002/2016RS006093. The high-power HF (high-frequency) facility (commonly known as Heating) near Tromsø, Norway, which is an essential part of the European Incoherent Scatter Scientific Association, has been upgraded in certain key areas in recent years. It is one of only four similar facilities in the world operating at present. An updated description of the facility is given, together with scientific motivation and some results. The main high-power parts such as transmitters, feed-system, and antennas remain essentially the same as built in the late 1970s. The improvements are in the areas of radio frequency waveform generation, computer control, and monitoring. In particular, fast stepping in frequency is now possible, an important aspect in examining features close to harmonics of the electron gyrofrequency. One antenna array has been modified to allow reception to implement an HF radar mode for mesospheric and magnetospheric probing. More realistic modeling of the antenna gain gives improved estimates of the total effective radiated power for both wanted and unwanted circular polarizations. Results are presented by using these new capabilities, but their full scientific potential has yet to be achieved.

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