Seasonal and Diurnal Variation on Tropospheric Scintillation at Ku-Band in Tropical Climate

Abstract

Tropospheric scintillation is a rapid fluctuation of the received signal amplitude which can cause propagation impairments that affect satellite communication systems operating above 10 GHz. Scintillation data was collected in Equatorial Johor Bahru, Malaysia, based on a one-year Ku-band propagation measurement campaign, utilizing MEASAT-1 Satellite with an antenna elevation angle of 75.61°. This work concentrates on the probability density function (PDF) of diurnal variations of clear sky scintillation variance analyzed on an hourly basis. Besides, seasonal variation of scintillation amplitude has been presented in this paper. From the results, it is concluded that clear sky scintillation variance is likely to occur during morning and afternoon periods. Moreover, clear sky scintillation amplitude of the South-West monsoon shows a relatively higher comparing with others monsoon seasons. Hence, signal attenuation based on seasonal and diurnal information is of great interest for the system designers to appropriately design fade margin.Tropospheric scintillation is a rapid fluctuation of the received signal amplitude which can cause propagation impairments that affect satellite communication systems operating above 10 GHz. Scintillation data was collected in Equatorial Johor Bahru, Malaysia, based on a one-year Ku-band propagation measurement campaign, utilizing MEASAT-1 Satellite with an antenna elevation angle of 75.61°. This work concentrates on the probability density function (PDF) of diurnal variations of clear sky scintillation variance analyzed on an hourly basis. Besides, seasonal variation of scintillation amplitude has been presented in this paper. From the results, it is concluded that clear sky scintillation variance is likely to occur during morning and afternoon periods. Moreover, clear sky scintillation amplitude of the South-West monsoon shows a relatively higher comparing with others monsoon seasons. Hence, signal attenuation based on seasonal and diurnal information is of great interest for the system designers to appropriately design fade margin.

Characterization of concurrent ku band tropospheric scintillation and rain attenuation in Malaysia

“…The experimental station installed in the premises of tropical region [18][19]. The experimental setup was collected for one year, situated at 103.64˚ E and 1.55˚ N consist of one direct broadcast receiving antenna with a diameter of 90 cm, pointed toward MEASAT-3, broadcasting satellite at the elevation angle of 75.61°.…”

Interfade Duration Statistics at Ku-band for Satellite Earth Links System in Equatorial Malaysia: Modeling Distribution

“…It is well known that satellite communication systems operating at high frequencies are severely impaired by atmospheric phenomenant and rain attenuation has become the most causes that degrading the transmitted signal [1,2]. This even much more critical in tropical or equatorial region as this area exibit higher rainfall rate than in temperate region.…”

Stochastic Approach to a Rain Attenuation Time Series Synthesizer for Heavy Rain Regions

“…Current and future wireless communication systems such as 5G cellular networks and satellite communication system are moving toward higher speed data rates and wider bandwidths with the employment of operating frequencies above 10 GHz [1]. Unfortunately, radio link operating at these frequencies suffer strong attenuation phenomena due to the atmospheric constituents such as rain, cloud, water vapour and turbulent fluctuations/scintillation [2]- [5]. Among these, rain appears as the major factor that degrades the performance of wireless communication systems [2].…”