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Measurement of Rain Attenuation in Terahertz Wave Range

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Author(s): Seishiro Ishii | Syuji Sayama | Toshihisa Kamei

Journal: Wireless Engineering and Technology
ISSN 2152-2294

Volume: 02;
Issue: 03;
Start page: 119;
Date: 2011;
Original page

Keywords: Terahertz Wave | Rain Attenuation | Raindrop-Size Distribution | M-P Distribution | Weibull Distribution | ITU-R

ABSTRACT
Rain attenuation at 355.2 GHz in the terahertz wave range was measured with our new 355.2 GHz measuring system under rainfall intensities up to 25 mm/hr. Rain attenuation coefficients were also calculated using four raindrop-size distributions, e Marshall-Palmer (M-P), Best, Polyakova-Shifrin (P-S) and Weibull distributions, and using a specific rain attenuation model for prediction methods recommended by ITU-R. Measurements of a terahertz wave taken at 355.2 GHz were compared with our calculations. Results showed that the propagation experiment was in very good agreement with a calculation from a specific attenuation model for use in prediction method recommended by ITU-R.

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Tangokurs Rapperswil-Jona

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