Title :
Slant-path rain attenuation at different elevation angles for tropical region
Author :
Kumar, L.S. ; Lee, Y.H. ; Ong, J.T.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
Gamma model is used to model the drop size distribution of Singapore. Specific rain attenuation is calculated using forward scattering coefficients and using ITU-R P.838-3 recommendations for vertically polarized waves at 11 GHz, 20 GHz, 30 GHz and 38 GHz at different elevation angles. Slant path attenuation is calculated using the specific rain attenuation at different elevation angles using ITU-R P.618-9 recommendations for 11 GHz, 20 GHz, 30 GHz and 38 GHz. Both the specific rain attenuation and slant-path rain attenuation are calculated at the point rainfall rate, 120.30 mm/hr, of Singapore and at a lower rainfall rate 66.54 mm/hr. The trend of slant-path rain attenuation at different elevation angles for the four frequencies is analyzed.
Keywords :
atmospheric electromagnetic wave propagation; microwave propagation; rain; ITU-R P.838-3; drop size distribution; forward scattering; frequency 11 GHz; frequency 20 GHz; frequency 30 GHz; frequency 38 GHz; gamma model; slant path rain attenuation; tropical region; vertically polarized wave; Attenuation; Communication system traffic; Light scattering; Optical attenuators; Polarization; Predictive models; Radio frequency; Rain; Shape; Size control; elevation angles; rain drop size distribution; slant-path rain attenuation; specific rain attenuation;
Conference_Titel :
Information, Communications and Signal Processing, 2009. ICICS 2009. 7th International Conference on
Conference_Location :
Macau
Print_ISBN :
978-1-4244-4656-8
Electronic_ISBN :
978-1-4244-4657-5
DOI :
10.1109/ICICS.2009.5397706
