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PL versus reception angle based on third-degree polynomial interpolation for maximum bandwidth.

PL versus reception angle based on third-degree polynomial interpolation for maximum bandwidth.

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Fig. 1. Measurement scenario.
Fig. 2. ECDFs for different receiver positions and maximum bandwidth.
Fig. 3. PLs for different receiver positions and maximum bandwidth.
Fig. 4. PL versus reception angle based on third-degree polynomial...
Variability of radio signal attenuation by single deciduous tree versus reception angle at 80 GHz
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  • Mar 2025
Vegetation significantly affects radio signal attenuation, influenced by factors such as signal frequency, plant species, and foliage density. Existing attenuation models typically address specific scenarios, like single trees, rows of trees, or green spaces, with the ITU-R P.833 recommendation being a widely recognized standard. Most assessments f...
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... í µí° ¶, í µí°·, í µí°¸, and í µí°¹ are coefficients of the interpolation polynomial. For the maximum bandwidth, the obtained result is depicted in Fig. 4. We can see that the interpolation curve considers the measurement data well. The obtained PL model is in line with intuition. The highest attenuation occurs for the reception direction between 20° and 100°. In these cases, the radio wave scattered by the tree must be reflected either back or sideways. The maximum attenuation occurs in ...