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Prime Journal of Physical Science

(ISSN: 2315-5043)

Volume 1, Issue 4, pp. 40-44

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Rain (Hydrometer) bistatic scatter calculations using Nigcomsat 1(R) and Intelsat performance metrics

(An Overview of extract from Dissertation “Micro-wave interference due to Rain Scatter at Ku and Ka Bands in Akure, South West, Nigeria”)

 

Alao OA

 

Department of Physical Sciences, Afe Babalola University, Ado Ekiti, Ekiti State, Nigeria.

 

Accepted 18th October, 2012

 
Abstract

 

This paper reports the calculation of rain scattering effects on vertically polarized signal along the earth- space path for the NIGCOMSAT 1(R) geostationary angle of elevation 42.50 compared with the INTELSAT (230 and 550) along the Indian and Atlantic ocean respectively required for signal availability in Nigeria. The papers first discuss the calculations of the transmission loss to radar reflectivity (LTOZ) constants spread over 35dB – 55dB antennae gains. The significance of Ka Bands frequencies were noted for different calculations for 20/30 GHz of the Super High Frequencies (SHF). The Bright band models are the scattering models cum meteorological model which includes; the link parameters, electrical characteristic of the link, interfering terrestrial station and the meteorological parameters. The results obtained based on Alao et al (2009) recent studies for the input for transmission loss L and effective transmission loss Le for both NIGCOMSAT (1) R and INTELSAT circuit showed comparative characteristics. Observation showed that 99.99% and 99.999% of signal availability were most significant for the INTELSAT precisions (that is, 230 and 550) compared with signal percentages of availability for NIGCOMSAT1(R) precisions. However, the investigation showed a summary that 0.01% and 0.001% time of unavailability of signal results computed for cumulative transmission loss for NIGCOMSAT 1(R) were of lower values, which signifies higher interference in the satellite receiving system of NIGCOMSAT 1 (R) circuit.

 

Key words: Hydrometer, intelsat, nigcomsat, metrics. 


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