Comparison between the measurement and prediction of HF radio signals propagating along the mid-latitude trough
Comparison between the measurement and prediction of HF radio signals propagating along the mid-latitude trough
- Author(s): A.J. Stocker ; D.R. Siddle ; E.M. Warrington
- DOI: 10.1049/cp:20030446
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- Author(s): A.J. Stocker ; D.R. Siddle ; E.M. Warrington Source: Ninth International Conference on HF Radio Systems and Techniques, 2003 p. 145 – 149
- Conference: Ninth International Conference on HF Radio Systems and Techniques
- DOI: 10.1049/cp:20030446
- ISBN: 0 85296 755 1
- Location: Bath, UK
- Conference date: 23-26 June 2003
- Format: PDF
Between October 2000 and January 2002, measurements of the carrier-to-noise density ratio, time-of-flight and direction of arrival were made for radio signals in the lower HF band received over a path from Uppsala, Sweden, to Leicester, UK. These observations were compared with the corresponding predictions given by VOACAP with the following results: during the summer at all times, and during the day in winter, there is a very good agreement, while at night (in winter) the agreement is poor. The poor agreement arises because of the off-great circle path propagation often found at these times. The off-great-circle propagation is consistent with the signal being scattered from irregularities in the north wall of the mid-latitude trough.
Inspec keywords: HF radio propagation; direction-of-arrival estimation; electromagnetic wave scattering; ionospheric electromagnetic wave propagation
Subjects: Radiowave propagation; Ionospheric electromagnetic wave propagation
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