Proceedings ArticleDOI
Analysis of bright-band height data from TRMM-PR for satellite communication in Durban, South Africa
E O Olurotimi,O. Sokoya,Joseph Sunday Ojo,Pius A. Owolawi +3 more
- pp 1-5
TLDR
Comparison of the observed results show that the International Telecommunication Union - Recommendation (ITU-R) P.839 recommended values were underestimated, and recommends using the physical information about rain height derived from the local databases to improve in the rain attenuation prediction accuracy for this region.Abstract:
In this paper, 4-year precipitation data obtained from Tropical Rain Measuring Mission-Precipitation Radar (TRMM-PR) satellite were processed and used to determine the distribution of rain height based on 00C isotherm height over Durban in South Africa. The results show that there is a strong variation of bright-band height over the years of observation and will mostly lie between 3639 m and 4197 m above mean sea level. The observed rain height lies between 4517 m and 4803 m. Comparison of the observed results show that the International Telecommunication Union — Recommendation (ITU-R) P.839 recommended values were underestimated. Thus, the specific attenuation values are determined using ITU-R P.618 by incorporating the determined rain height for the location of Durban. It is noticed that the differences between the estimated attenuation based on the measured rain height and the established ITU-R rain height can be as high as 8 dB at Ka band. Thus, recommending using the physical information about rain height derived from the local databases to improve in the rain attenuation prediction accuracy for this region.read more
Citations
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Journal ArticleDOI
Observation of bright-band height data from TRMM-PR for satellite communication in South Africa
TL;DR: In this paper, the effect of rain on a satellite link operating at a frequency above 10 GHz can be estimated using various parameters such as rain rate, drop size distribution, and rain height.
Dissertation
Combined tropospheric attenuation along satellite path at SHF and EHF bands in subtropical region
TL;DR: In the fulfilment of the requirements of the degree of Doctor of Engineering: Electronic Engineering, Durban University of Technology (DUET), Durban, South Africa, 2019.
Journal ArticleDOI
Distribution of rain height over subtropical region: Durban, South Africa for satellite communication systems
TL;DR: In this paper, the three-parameter Dagum distribution of the rain height over Durban, South Africa was used to study the monthly, seasonal, and annual variations using the parameters estimated by the maximum likelihood of the distribution.
Proceedings ArticleDOI
Modeling freezing height level for satellite link communication: Durban, South Africa
TL;DR: It was observed that 3-Parameter Dagum (Dagum) distribution performs better over the next most suitable distribution (3-Parameter Log-logistic) for the modeling of freezing height level over Durban with improvement of 0.94% in Bias error, 0.48% Root Mean Square Error and 7.43% Kolmogorov-Smirnov test (K-S test).
Proceedings ArticleDOI
Freezing height level distribution over Durban, South Africa for satellite communication
TL;DR: In this article, the authors observed three-parameter Dagum distribution on the Freezing Height Level (FHL) using averaged 5-year data over Durban and found that the distribution shows a good fit with Root Mean Square Error of about 0.2613 when compared with the measured FHL.
References
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Journal ArticleDOI
The Tropical Rainfall Measuring Mission (TRMM) Sensor Package
TL;DR: In this article, the authors present a reference guide to users wishing to make use of the Tropical Rainfall Measuring Mission data, which covers each of the three primary rainfall instruments: the passive microwave radiometer, the precipitation radar, and the Visible and Infrared Radiometer System on board the spacecraft.
Journal ArticleDOI
Rain profiling algorithm for the TRMM precipitation radar
TL;DR: In this paper, an algorithm that estimates the instantaneous profiles of the true radar reflectivity factor and rainfall rate from the radar reflectivities profiles observed by the precipitation radar (PR) onboard the TRMM satellite is presented.
Journal ArticleDOI
A prediction model that combines rain attenuation and other propagation impairments along Earth-satellite paths
TL;DR: In this article, a procedure for predicting the combined effect of rain attenuation and several other propagation impairments (at frequencies between 4 and 35 GHz) along Earth-satellite paths is presented.
Journal ArticleDOI
Freezing height distribution in the tropics
TL;DR: Comparisons show that the radar bright-band heights typically occur 300 m below the 0°C isotherm heights, and results indicate that this difference may be latitude dependent, and the year-to-year variability and the seasonal variation are examined.