Clear Sky Diurnal Behavior of Tropospheric Scintillation at Ku-Band Satellite Communication in Equatorial Malaysia

Elshami, Ibtihal Fawzi; Lam, Hong Yin; Din, Jafri; Jong, Siat Ling

doi:10.11113/jt.v77.6279

Cited by 3 publications

(4 citation statements)

References 14 publications

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“…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°.…”

Section: Methodsmentioning

confidence: 99%

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

Elshami¹,

Din²,

Lam³

et al. 2019

IJEECS

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<span>Tropospheric scintillation in satellite communication systems operating at frequencies over 10 GHz is a significant impairment, especially in tropical regions, as attenuation affects scintillation dramatically. This work concentrates on tropospheric scintillation in equatorial Johor Bahru, Malaysia, based on a one-year Ku-band propagation measurement study utilising a direct broadcast receiver and an automatic weather station. This study aimed to investigate the relationship between wet scintillation and rain attenuation using experimental measurements. The power spectral analysis has been carried out to determine required cut-off frequency of filtering to separate out rain attenuation and scintillation effects. The results can provide significant information on the fluctuations of wet scintillation at Ku-band earth space link in tropical regions.</span>

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Section: Methodsmentioning

confidence: 99%

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

Elshami¹,

Din²,

Lam³

et al. 2019

IJEECS

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“…The broadcasting signal at 11.075 GHz is monitored and recorded through spectrum analyzer and data logger. The experimental setup is illustrated in Figure1and the details of experimental setup can be found in [13]. The experimental data set was processed and separated into rain periods and clear sky periods based on data from a tipping bucket rain gauge located near the receiver antenna [15].…”

Section: Experimental Setup and Data Processingmentioning

confidence: 99%

“…Various studies had been carried out to predict the clear sky tropospheric scintillation, using, in particular, diurnal behaviour related to the hour of the day [6]- [12]. Similar studies that focus on this aspect in heavy rain regions are still very rare, with the [13], [14]. Hence, it is worthwhile to further investigate the seasonal and diurnal variations of scintillation in this heavy rain region.…”

Section: Introductionmentioning

confidence: 99%

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

Elshami

Din

2016

IJECE

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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.

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“…Ka-band frequency (20 GHz-30 GHz) can also help address satellite communication issues where the existing allocation of bandwidth has become congested with the growing market of satellite communication data transmission [1]. Nevertheless, with its high-frequency range, signal attenuation and scintillation effects are severely exposed to the Ka-band spectrum [2]. Scintillation is the rapid fluctuation in the amplitude and phase of the signals [3].…”

Section: Introductionmentioning

confidence: 99%

Scintillation Effects of Ka-band Frequency on Satellite Application

Badron

Mujei

Rahim

et al. 2022

J. Phys.: Conf. Ser.

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The satellite communication system is currently congested because of the high demand for data transmission. The Ka-band is a greater range band that can help to solve the issue. However, Ka-band is severely impacted by scintillation at its high frequency. One of the transmitting impairments is scintillation, a sudden fluctuation in the amplitude of the signal and electromagnetic waves, that generates signal attenuation and degradation. In the presence of rain and even under clear skies, scintillation affects the output of Ka-Band. The scintillation prediction model has mostly been evaluated and applied in countries with four-season climates. The objective of this study was to evaluate the Ka-band scintillation data and compare the findings with other existing scintillation models to validate the outcome. For data of one year (2016) at the Ka-Band frequency of 20.2 GHz, this research focused on analysing the tropospheric scintillation from the satellite data. The experimental data from MEASAT 5 were analysed to see the effect of tropospheric scintillation under clear-sky conditions using a dish antenna with a diameter of 7.3 metres and an elevation angle of 68.8°. The satellite signal measurement samples were gathered and filtered using MATLAB to provide clear-sky scintillation. Next, the obtained raw data was converted into readable data. The data was then plotted, and the experimental data was compared to the other models of scintillation. It was essential to evaluate the outcome of the comparison and address which model was most appropriate for tropical climates. Moreover, this project’s cutoff frequency was 0.023Hz, which was computed from the average cut-off frequencies of 12 months in 2016.

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Clear Sky Diurnal Behavior of Tropospheric Scintillation at Ku-Band Satellite Communication in Equatorial Malaysia

Cited by 3 publications

References 14 publications

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

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

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

Scintillation Effects of Ka-band Frequency on Satellite Application

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