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A comparison of observed and modelled deviations from the great circle direction for a 4490 km HF propagation path along the midlatitude ionospheric trough

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journal contribution
posted on 19.11.2007, 15:36 by A.J. Stocker, E. Michael Warrington, T. B. Jones
Measurements of the direction-of-arrival of signals propagating on a long (4490 km) path along the midlatitude trough show that the azimuth can be deviated by up to 100° from the great circle bearing. In this paper an attempt has been made to model the shift in azimuth through a ray tracing simulation. Two possible mechanisms which lead to changes in azimuth have been investigated: (1) propagation along the density gradients which form the equatorward wall of the trough and (2) side scatter from regions of the sea well to the south of the trough. Of these two mechanisms, sea scatter gives results which are much closer to those observed.

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Citation

Radio Science, 2003, 38 (3), art. no. 1054

Version

VoR (Version of Record)

Published in

Radio Science

Publisher

American Geophysical Union (AGU)

issn

0048-6604

Copyright date

2003

Available date

19/11/2007

Publisher version

http://onlinelibrary.wiley.com/doi/10.1029/2002RS002781/abstract

Language

en

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