A comparison of measurements and predictions of HF groundwave propagation

Date Issued
2005
Keywords
Bølgeforplantning
Project number
2005/01703
Permalink
http://hdl.handle.net/20.500.12242/1863
Collection
Rapporter
05-01703.pdf
Size: 4M
Abstract
The field-strength of HF groundwave was logged for 6 different locations in the south-eastern part of Norway. Results were compared to models that take terrain elevation and ground conductivity/permittivity as input parameters. Performance of models was analysed and on this basis, and a simple model was recommended. It was found that the terrain profile is important even for frequencies in the lower HF range for terrain typical of Norway. For land-based paths, ground electrical parameters are highly important, and further work on proper identification of these is recommended.
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