13-19 June 2015
University of Alberta
America/Edmonton timezone
Welcome to the 2015 CAP Congress! / Bienvenue au congrès de l'ACP 2015!

Transmission of Waves from a High-Frequency Ionospheric Heater to the Topside Ionosphere

16 Jun 2015, 14:45
15m
CAB 243 (University of Alberta)

CAB 243

University of Alberta

Oral (Non-Student) / orale (non-étudiant) Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE) T2-3 Ground-based / in situ observations and studies of space environment II (DASP) / Observations et études de l'environnement spatial, sur terre et in situ II (DPAE)

Speaker

Dr Gordon James (University of Calgary)

Description

In the first year of operation of the ePOP instruments on the Canadian small satellite CASSIOPE, a number of passes were recorded during which the Radio Receiver Instrument (RRI) measured radiation from powerful high-frequency ground transmitters that act as ionospheric heaters. In the case of measurements of transionospheric propagation from the Sura heating facility in Russia, located at 56.15°N, 46.10°E, RRI reception of heater waves was accompanied by the operation of the trifrequency Coherent Electromagnetic Radio Tomography (CERTO) beacon on the satellite radiating at 150, 400 and 1067 MHz. CERTO waves, detected at three ground receivers near Sura, allowed total electron content to be measured continuously along the three different paths between CASSIOPE and the three ground sites. Subsequent tomographic processing provided the ionospheric electron density distribution as a function of latitude and altitude. With this density model tool in hand, ray-tracing was applied to the prediction at the spacecraft of various properties of the HF waves from the Sura heater. When compared with the observations, the predictions validate the relevance of geometric-optics principles in transionospheric propagation.

Primary author

Dr Gordon James (University of Calgary)

Co-authors

Dr Artem Padokhin (Moscow State University) Dr Carl Siefring (Naval Research Laboratory) Dr Vladimir Frolov (Radiophysical Research Institute)

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