The Clutter and terrain effects on path loss in the VHF/UHF bands

Faruk, N, Bellow, O.W, Oloyede, A.O, Surajudeen-Bakinde, N, Obiyemi, O, Olawoyin, L.A, Ali, Maaruf and Jimoh, A (2017) The Clutter and terrain effects on path loss in the VHF/UHF bands. IET Microwaves, Antennas & Propagation. pp. 1-11. ISSN 1751-8725

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Radio frequency (RF) path loss models are essential in the planning of wireless networks. However, the peculiar ambient characteristics of geographical locations necessitate a wide range of these models to take into consideration the different terrain dielectric, scattering irregularities and clutter. This paper investigates the effects of terrain and clutter on frequency dependent path loss models in the VHF and UHF bands using multi-transmitter scenarios. Seven transmitters and fifteen measurement routes were covered using an Agilent N9342C (100 Hz - 7 GHz) spectrum analyzer. The measured results show that the models’ prediction errors follow the terrain profile and also that the clutter effects are noticeable along each route with varying degrees of impact. Near constant standard deviation errors (SDEs) were observed across all the models for the specific routes as well as a strong dependency on the terrain profile and clutters along the measurement routes. The UHF and VHF bands have average SDEs of 10.5 dB and 7.5 dB respectively. A 3D Digital Elevation Model (DEM) showing the terrain and prediction error was also developed. Contour lines were extracted from the Advanced Spaceborne Thermal Emission Radiometer (ASTER) Global Digital Elevation Model (GDEM) Datasets. Visualization of the terrain profile was achieved in the ArcScene software environment.

Item Type: Article
Uncontrolled Keywords: path loss, VHF/UHF bands
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Health & Science > Department of Science & Technology
Depositing User: David Upson-Dale
Date Deposited: 28 Nov 2017 08:49
Last Modified: 28 Nov 2017 09:10

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