Prediction of rain attenuation on earth-to-satellite link using rain rate measurement with various integration times

• Main Authors: Momin, Mullah, Alam, Md Moktarul, Mahfuz, M. M. Hasan, Islam, Md. Rafiqul, Habaebi, Mohamed Hadi, Badron, Khairayu
• Format: Conference or Workshop Item
• Language: English; English
• Published: IEEE 2021
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://irep.iium.edu.my/90595/1/09467173.pdf; http://irep.iium.edu.my/90595/7/90595_Prediction%20of%20Rain%20Attenuation%20on%20Earth-to-satellite_schedule.pdf; http://irep.iium.edu.my/90595/; https://ieeexplore.ieee.org/document/9467173

Frequency spectrum for satellite communication systems is moving towards Ka- and V-bands, the performance of which is severely degraded by rain attenuation, especially in tropical regions. ITU-R 618-13 and few other researchers proposed a complete method to predict rain attenuation at any desired frequency. All prediction models require rain rate at 0.01% of time occurrence measured by rain gauge with 1-min integration time. Few measurements of rain attenuation in Malaysia reported that ITU-R 618-13 model underestimated the measurement at Ku-band. However, ITU-R recommends that rain intensity must be measured with one-minute integration time or less in order to predict rain effects on microwave propagation. All Recommendations and prediction methods are reported and presented based on rain rate measured with 1-minute integration time. This paper presents the statistical distributions of rain rate measured in Malaysia with 10-sec, 20-sec, 30-sec, 1-min and 2-min integration times. ITU-R P.618-13 prediction method is used to estimate earth-to- satellite link’s rain attenuation using measured rain rate with 10-sec, 20-sec, 30-sec, 1-min and 2-min integration times and compared with measurements.