Distribution of rain height over subtropical region: Durban, South Africa for satellite communication systems

IEEE Radio and Antenna Days of the Indian Ocean 2017

无线电电子学

Olurotimi, E.O.^1 ; Sokoya, O.^1 ; Ojo, J.S.^2 ; Owolawi, P.A.^3

Department of Electronic Engineering, DUT. KZN. 4000, South Africa^1

Department of Physics, FUTA, 340001, Nigeria^2

Department of Computer Systems Engineering, TUT, Pretoria

0001, South Africa^3

关键词: Annual variations;    Durban , South Africa;    Higher frequencies;    Parameters estimated;    Performance estimation;    Root mean square errors;    Subtropical regions;    Three parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/321/1/012006/pdf
DOI  :  10.1088/1757-899X/321/1/012006

来源: IOP

【 摘 要 】

Rain height is one of the significant parameters for prediction of rain attenuation for Earth-space telecommunication links, especially those operating at frequencies above 10 GHz. This study examines Three-parameter Dagum distribution of the rain height over Durban, South Africa. 5-year data were used to study the monthly, seasonal, and annual variations using the parameters estimated by the maximum likelihood of the distribution. The performance estimation of the distribution was determined using the statistical goodness of fit. Three-parameter Dagum distribution shows an appropriate distribution for the modeling of rain height over Durban with the Root Mean Square Error of 0.26. Also, the shape and scale parameters for the distribution show a wide variation. The probability exceedance of time for 0.01% indicates the high probability of rain attenuation at higher frequencies.