Abstract
This paper presents the First report of an ongoing to study the effects of trees on radio signals at microwave frequencies. The effects of vegetation media on the planning and design of radio links at microwave and Microwave frequencies are considerable and must be accounted for by radio system operators and users. Measurements have been made to determine the extent of attenuation when propagated through vegetation and also have been carried to be conducted on selected vegetation with various degree of foliation to determine the dependence of losses on vegetation. Also, path geometry and tree geometry are among other parameters under consideration. The results from these experiments compared with standard ITUR-P empirical models and to reflect the dependence of vegetation attenuation on the input parameters under observation.
Highlights
Vegetation and trees planted at strategic places all over Italy and at the same time maintain a greener environment
For radio planners whose aim is to achieve effective communication with high reliability, link availability and good quality of service (QoS), the effect of vegetation has to be taken into consideration during the planning and design work Trees, either singly or as a group influence the level of the signal directly by providing an additional attenuation over free space loss
The DG model is a parametric equation in which it is said that the loss of vegetation decreases with the increase of the frequency, canceling the wave propagation behavior in the vegetation, which increases the losses as the frequency increases; Analytical models have been demonstrated to provide more accurate predictions, but their formulation and validation is often dependent on experimental investigations, such as the RET model
Summary
Vegetation and trees planted at strategic places all over Italy and at the same time maintain a greener environment. For radio planners whose aim is to achieve effective communication with high reliability, link availability and good quality of service (QoS), the effect of vegetation has to be taken into consideration during the planning and design work Trees, either singly or as a group influence the level of the signal directly by providing an additional attenuation over free space loss. They act as obstacles causing absorption and scattering to radio signals. Concerted efforts have been made in the past by Song Meng et al (2009) [5] and Cheffena et al (2009) [6] to model path loss at various
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