Journal ID : TRKU-22-09-2020-11133
[This article belongs to Volume - 62, Issue - 09]
Total View : 471

Title : Bright-band Characterization and Attenuation Estimation for Lagos from GPM

Abstract :

The work characterized the bright-band and estimated attenuation for Lagos using space-borne precipitation radars (GPM) and Dissanayake melting layer model. Furthermore, the impact of the melting layer on satellite communication signals was investigated. The rain height, freezing height, bright-band thickness and attenuation due to rain and melting layer were estimated. Three years monthly (January 2014 to December 2016) rain precipitation data was sourced from GPM air-borne dual frequency precipitation radar (PR) equipment. GPM DPR L3 precipitation data was selected from a group of products list under the physical quantities from the database of JAXA Earth Observation Research Center. The vertical reflectivity profiles (VRP) were thereafter constructed from these processed data. Results obtained indicated that, at 0.1%, 0.01% and 0.001%, the attenuation exceedance due to melting layer are 13.43 dB, 28.34 dB and 40.40 dB respectively. Without taking melting layer into account, attenuation exceeded are 8.34 dB, 18.31 dB and 34.80 dB at 0.1%, 0.01% and 0.001% percentages of time, respectively. This will provide useful information for use in the design and manufacture of satellite communication equipment with acceptable quality of service for domestic, commercial and military applications

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