Measurements and Modeling of Path Loss Over Irregular Terrain for Near-Ground and Short-Range Communications

In this paper, radio wave propagation over irregular terrain is investigated in 200–600MHz (VHF/UHF band). Measured results are compared with different path loss models such as Fresnel knife edge diffraction and uniform theory of diffraction (UTD). It is shown that, for low antenna heights, using a combination of the two-ray path loss model and knife-edge diffraction, great improvement in path loss prediction accuracy is achieved. The derived model is aimed to effectively predict path loss for near-ground and short-range communication applications.

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