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Observations of the directional characteristics of ionospherically propagated HF radio channel sounding signals over two high latitude paths

By E. Michael Warrington


Copyright © 1998 IEE. This paper was published as: Microwaves, Antennas and Propagation, IEE Proceedings, 1998, 145 (5), pp. 379-385. This paper is available from http://ieeexplore.ieee.org/search/wrapper.jsp?arnumber=741952. Doi: 10.1049/ip-map:19982068Metadata only entryThe author presents measurements of the directional characteristics of the Doppler and time delay components of a pulsed channel sounding signal received over two high latitude paths. A variation in bearing with Doppler frequency was frequently evident, an effect attributed to Doppler shifts imposed on the signal when scattered from ionospheric irregularities drifting across the reflection points. For a transauroral path, for which the ionospheric reflection points were subauroral, standard deviations of up to ~2.5° were observed in the azimuthal power distribution of the received energy. Much greater disturbances with azimuthal standard deviations of up to ~35° were recorded on signals received over a path contained entirely within the polar cap path

Publisher: Institute of Electrical Engineers (IEE)
Year: 1998
DOI identifier: 10.1049/ip-map:19982068
OAI identifier: oai:lra.le.ac.uk:2381/7393
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