Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Advances in Science and Technology. Research Journal

1 2014

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Effects of rain attenuation on satellite communication link

Ezeh G.N., Chukwuneke N.S, Ogujiofor N.C., Diala U.H.

Advances in Science and Technology. Research Journal

2014

Vol. 8, nr 22

1--11

Rain attenuation is a major challenge to microwave satellite communication especially at frequencies above 10 GHz, causing unavailability of signals most of the time. Rain attenuation predictions have become one of the vital considerations while setting up a satellite communication link. In this study, rain attenuation models, cumulative distribution curves and other analytical tools for successful prediction of rain attenuation are presented. A three year Rain rate data was obtained from the Nigeria Meteorological Agency (NIMET) database in addition to experimental data. Of the three prediction models used in the study, Ajayi model gave the range of values closest to the experimental data. A correctional factor was determined as 1.0988 and used to modify the Ajayi model. This modification to Ajayi’s model enabled its rain attenuation values conform more closely to the experimental result.