Abstract
Tropospheric scintillation can become a significant impairment in satellite communication systems, especially in tropical regions with frequencies higher than 10 GHz, the attenuation is dramatically affecting the scintillation. This work concentrates on those aspects in equatorial Johor Bahru, Malaysia, based on a one-year Ku-band propagation measurement campaign, utilizing the equipment of Direct Broadcast Receiver (DBR) and Automatic Weather Station (AWS). This study investigates the relationship between wet scintillation and rain attenuation using experimental measurement and concentrate on the probability density function (PDF) of different scintillation parameters. From the results, it is concluded that wet scintillation intensity increases with rain attenuation. Thus, the relationship can be phrased by linear equations or power-law. The PDFs of wet scintillation intensity, adapted to a given rain attenuation level, are found lognormally distributed, leading to selection of method for determining the relation between conditional PDFs and rain attenuation.
Highlights
Satellite communication systems operating at frequencies above 10 GHz are often heavily influenced by atmospheric effects, mainly due to the scintillation and rain attenuation
This study intends to explore those statistics in an equatorial site by exploiting the propagation measurements carried out at Universiti Teknologi Malaysia (UTM) in Johor Bahru, Malaysia
Experimental Setup The experimental station installed in the premises of Universiti Teknologi Malaysia, Johor Bahru, situated at 103.64 ̊ E and 1.55 ̊ N consist of one direct broadcast receiving
Summary
Satellite communication systems operating at frequencies above 10 GHz are often heavily influenced by atmospheric effects, mainly due to the scintillation and rain attenuation. There have been some studies to understand and estimate the relationship between wet scintillation and rain attenuation in the temperate region [2,3,4,5], there are only limited experimental results of wet scintillation in equatorial and tropical regions [6,7,8,9]. It is worthwhile to further investigate and estimate the natural characteristics of wet scintillation in Malaysia with respect to the experimental database available and relationships between wet scintillation and rain attenuation models from the established literature. 2. Experimental Setup The experimental station installed in the premises of Universiti Teknologi Malaysia, Johor Bahru, situated at 103.64 ̊ E and 1.55 ̊ N consist of one direct broadcast receiving. Automatic Weather Station (AWS) is located equipped with various sensors to provide several surface parameters such as temperature, humidity, and wind speed and direction and a tipping bucket rain gauge, is located near the receiver antenna
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