Rain Attenuation over Terrestrial Microwave Links at 18 GHz as Compared with Prediction by ITU-R Model

Shrestha, Sujan; Jung-Jae Lee; Sun-Woong Kim; Dong-You Choi
September 2017
Journal of Information & Communication Convergence Engineering;Sep2017, Vol. 15 Issue 3, p143
Academic Journal
Absorption of microwave radio frequency signal by atmospheric rain is prevalent at frequencies above 10 GHz. This paper presents the studies on rain attenuation at 18 GHz for 3.2 km experimental link between Khumdang (Korea Telecom, KT station) and Icheon (National Radio Research Agency, RRA station). The received signal data for rain attenuation and rain rate were collected at 10 second intervals over a three year periods from 2013 to 2015. Out of several models, the paper present discussion and comparison of ITU-R P.530-16 model, Moupfouma model, Da Silva Mello model along with suitable rain attenuation prediction method. The limitation of research lies on the experimental system that is set up in only one location, however, the preliminary results indicate the application of suitable 1-minute rain attenuation model for specific site. The method provides useful information for microwave engineers and researchers in making decision over the choice of most suitable rain attenuation prediction in terrestrial links.


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