Research ArticleOpen AccessGoogle Scholar indexed
Rain Attenuation at Terahertz
- 1
Wireless Engineering and Technology·Volume 01 (2010)·Pages 92–95·Published 31 October 2010·DOI10.4236/wet.2010.12014
Copy link · social · email
Abstract
Rain attenuation values were calculated using empirical raindrop-size distributions, which were, Marshall-Palmer (M-P), Best, Polyakova-Shifrin (P-S) and Weibull raindrop-size distributions, and also calculated using a specific rain attenuation model for prediction methods recommended by ITU-R. Measurements of Terahertz wave taken at 313 GHz (0.96 mm) were compared with our calculations. Results showed that the propagation experiment was in very good agreement with a calculation from the specific attenuation model for use in prediction methods by ITU-R.
KeywordsRain AttenuationRaindrop-Size DistributionTerahertz WavesP-S DistributionWeibull DistributionITU-R
- R. M. Langdon, V. Handerek, P. Harrison, H. Eisele, M. Stringer, C. F. Rae and M. H. Dunn, “Military Applications of Terahertz Imaging,” 1st EMRS DTC Technical Conference, Edinburgh, 2004.
- J. S. Marshall and W. M. K. Palmer, “The Distribution of Raindrops with Size,” Journal of Meteorology, Vol. 5, No. 4, 1948, pp. 165-166.
- A. C. Best, “The Size Distribution of Raindrops,” Quarterly Journal of the Royal Meteorological Society, Vol. 76, No. 327, 1950, pp. 16-36.
- I. V. Litovinov, “On the Distribution Function of Particles of Rainfall,” Izvestia AN SSSR, Geophysical Series, No. 6, 1957, pp. 838-839.
- I. V. Litovinov, “Size Distribution of Raindrops from Melting Hail,” Izvestia, Geophysical Series, No. 6, 1958, pp. 903-912.
- N. P. Krasyuk, V. I. Rozenberg and D. A. Chistyakov, “Attenuation and Scattering of Radar Signals by Radio with Shifrin and Marshall-Palmer Drop Size Distributions,” Radio Engineering and Electronic Physics, Vol. 13, No. 10, 1968, pp. 1638-1640.
- “Investigation of Radar Rain Clutter Cancellation Using a Polarization Method,” RADC-TR-75-126, Final Technical Report, University of Tennessee, Knoxville, August 1975.
- C. W. Ulbrich and D. Atlas, “Assessment of the Contribution of Differential Polarrization to Improve Rainfall Measurements,” Radio Science, Vol. 19, No. 1, 1984, pp. 49-57.
- M. Sekine and G. Lind, “Rain Attenuation of Centimeter, Millimeter and Submillimeter Radio Waves,” Proceedings of 12th European Microwave Conference, Helsinki, 1982, pp. 584-589.
- M. Sekine and C. D. Chen, “Rain Attenuation in Terrestrial and Satellite Communications Links,” Proceedings of the 15th European Microwave Conference, Paris, 1985, pp. 985-990.
- C. D. Chen, Y. Okamoto and M. Sekine, “Cancellation of Radar Rain Clutter Using Circular Polarization,” Transactions on IECE of Japan (Section E), Vol. E68, No. 9, 1985, pp. 620-624.
- M. Sekine, “The Relationship between Radar Reflectivity and Rainfall Rate,” Transactions on IECE of Japan (Section E), Vol. E69, No. 5, 1986, pp. 581-582.
- M. Sekine, “Rain Attenuation from Various Raindrop- Size Distributions,” Transactions on IECE of Japan (Section E), Vol. E69, No. 6, 1986, pp. 711-712.
- M. Sekine, C. D. Chen and T. Musha, “Rain Attenuation from Log-Normal and Weibull Rain-Drop Distributions,” IEEE Transactions on Antennas and Propagation, Vol. AP-35, No. 3, 1987, pp. 358-359.