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Tropical raindrop size distribution for the prediction of rain attenuation of microwaves in the 10-40 GHz band

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4 Author(s)
Tat-Soon Yee ; Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore ; Pang-Shyan Kooi ; Mook-Seng Leong ; Le-Wei Li

This paper describes the measurement of microwave rain attenuation over a ten-year period (1988-1998) in Singapore. The rain attenuation of (vertically and horizontally polarized) microwaves at 15, 21, and 38 GHz propagating over a path length of approximately 1.1 km were recorded. A negative-exponential raindrop size distribution model is then developed by fitting of the experimental data with the total extinction cross sections of oblate spheroidal raindrops computed from the T-matrix approach. Graphs for attenuation versus rain rate (at selected frequencies) and for attenuation versus frequency (at selected rain rates) are also given

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:49 ,  Issue: 1 )