| EPSRC Reference: |
EP/C014642/1 |
| Title: |
Further investigations and simulation of ionospheric radiowave propagation effects occurring over northerly paths |
| Principal Investigator: |
Warrington, Professor M |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Engineering |
| Organisation: |
University of Leicester |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
07 November 2005 |
Ends: |
06 November 2008 |
Value (£): |
232,874
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| EPSRC Research Topic Classifications: |
| RF & Microwave Technology |
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| Panel History: |
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Summary on Grant Application Form |
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A wealth of knowledge concerning the propagation of HF radio signals over northerly paths, including many unique measurements of directional effects and their relationship with signal characteristics, has resulted from various investigations undertaken by the University of Leicester. The propagation mechanisms resulting in off-great circle propagation (such effects are often large, up to 100 degrees from the great circle direction) have been identified and considerable progress made in modelling the effects by means of ray-tracing through complex model ionospheres. It is important to note that a strong correlation has been identified between Doppler spreading, a limiting factor in the performance of modems in data transmission systems, and the presence of off-great circle propagation. In order to maximise the benefit of this research, further work is required directed towards (a) additional measurements along the trough to investigate differences in the propagation characteristics between solar maximum and solar minimum, and (b) development of the ionospheric ray-tracing techniques, in particular to include methods for the prediction of the channel scattering function (delay and Doppler dispersions). The development of the ray-tracing model is also of importance since it allows us to consider paths which have not been subject to experimental investigation.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.le.ac.uk |