1. Ajayi, G. O., S. Feng, S. M. Radicella, and B. M. Reddy, "Handbook on Radio Propagation Related to Satellite Communications in Tropical and Subtropical Countries," ICTP, 1996.
2. Crane, R. K., Electromagnetic Wave Propagation through Rain, John Wiley, 1996.
3. Das, S., A. Maitra, and A. K. Shukla, "Rain attenuation modelling in the 10-100 GHz frequency using drop size distributions for different climate zones in tropical India," Progress In Electromagnetics Research B, Vol. 25, 211-224, 2010.
doi:10.2528/PIERB10072707
4. Chen, K.-S., C.-Y. Chu, and Y.-C. Tseng, "A semi-empirical model of rain attenuation at Ka-band in Northern Taiwan," Progress In Electromagnetics Research M, Vol. 16, 213-223, 2011.
5. Mandeep, J. S. and J. E. Allnut, "Rain attenuation prediction at Ku-band in South East Asia countries," Progress In Electromagnetics Research, Vol. 76, 65-74, 2007.
doi:10.2528/PIER07062605
6. Berne, A. and R. Uijlenhoet, "A stochastic model of range profiles of raindrop size distributions: Application to radar attenuation correction," Geophys. Res. Lett., Vol. 32, L10803, 2005, doi:10.1029/2004GL021899.
doi:10.1029/2004GL021899
7. Jameson, A. R. and A. B. Kostinski, "What is a raindrop size distribution?," Bulletin of the American Meteorological Society,, Vol. 82, 1169-1177, 2001.
doi:10.1175/1520-0477(2001)082<1169:WIARSD>2.3.CO;2
8. Owolawi, P. A., "Characteristics of rain at microwave and millimetric bands for terrestrial and satellite links attenuation in South Africa and surrounding islands,", Ph.D. Dissertation, School KwaZulu Natal, Durban, South Africa, Jul. 2010.
doi:10.1175/1520-0477(2001)082<1169:WIARSD>2.3.CO;2
9. Uijlenhoet, R., J. A. Smith, and M. Steiner, "Microphysical structure of extreme precipitation as inferred from ground-based raindrop spectra," Journal of the Atmospheric Sciences, Vol. 60, 1220-1238, 2003.
doi:10.1175/1520-0469(2003)60<1220:TMSOEP>2.0.CO;2
10. Laws , J. O. and D. A. Parsons, "The relation of raindrop-size to intensity," Trans. Amer. Geophys. Union, Vol. 24, 452-460, 1943.
doi:10.1029/TR024i002p00452
11. Marshall, J. S. and W. M. Palmer, "The distribution of raindrops with size," Journal of Meteorology, Vol. 5, 165-166, 1948.
doi:10.1175/1520-0469(1948)005<0165:TDORWS>2.0.CO;2
12. Quimpo , R. G. and A. B. Brohi, "On the frequency distribution of raindrop sizes," Journal of Irrigation and Drainage Engineering, Vol. 112, No. 2, 119-127, May 1986.
doi:10.1061/(ASCE)0733-9437(1986)112:2(119)
13. Owolawi, P. A., "Raindrop size distribution model for the prediction of rain attenuation in Durban," PIERS Online, Vol. 7, No. 5, 516-523, 2011.
14. Maaciel, L. R. and M. S. Assis, "Tropical rainfall drop size distribution," International Journal of Satellite Communications, Vol. 8, 181-186, 1990.
doi:10.1002/sat.4600080310
15. Kumar , L. S., Y. H. Lee, and J. T. Ong, "Truncated gamma drop size distribution models for rain attenuation in Singapore," IEEE Transactions on Antennas and Propagation, Vol. 58, No. 4, Apr. 2010.
doi:10.1109/TAP.2010.2042027
16. Kumar , L. S., Y. H. Lee, and J. T. Ong, "Two-parameter gamma drop size distribution models for singapore," IEEE Transactions on Geoscience and Remote Sensing, Vol. 549, No. 4, Sep. 2011.
17. Jassal, B. S., A. K. Verma, and L. Singh, "Raindrop size distribution and attenuation for Indian climate," Indian Journal of Radio and Space Physics, Vol. 23, No. 3, 193-196, Jun. 1994.
18. Tharek, A. R. and J. Din, "Rainfall drop size distribution measurements in Malaysia," Proc. URSI Comm. F. 1992 Symposium Wave Propagation and Remote Sensing, 1.2.1-1.2.5, Ravenscar, North Yorkshire, UK, Jun. 8-12, 1992.
19. Ajayi, G. O. and R. L. Olsen, "Modelling of tropical raindrop size distribution for microwave and millimeter wave applications," Radio Science, Vol. 20, 193-202, 1985.
doi:10.1029/RS020i002p00193
20. Ajayi, G. O. and A. Adimula, "Variations in raindrop size distribution and specific attenuation in a tropical environment," URSI Comm. F Symposium, 811-814, La Londe-less Maures, France, Sep. 1989.
21. Sevruk, B. and W. R. Hamon, International Comparison of National Precipitation Gauges with a Reference Pit Gauge, WMO Instrument and Observing Methods Rep., No. 17, 111, 1984, [Available from World Meteor. Org., Case Postale 2300, CH-1211, Geneva, Switzerland].
22. Sevruk, B., "Wind induced measurement error for high-intensity rains," Proc. International Workshop on Precipitation Measurement, WMO Tech. Document 328, 199-204, 1989, [Available online at http://www.wmo.ch].
23. Groisman, P. Y. and D. R. Legates, "The accuracy of united states precipitation data," Bull. Amer. Meteor. Soc., Vol. 75, 215-227, 1994.
doi:10.1175/1520-0477(1994)075<0215:TAOUSP>2.0.CO;2
24. Ne·spor, V. and B. Sevruk, "Estimation of wind-induced error of rainfall gauge measurements using a numerical simulation," J. Atmos. Oceanic Technol., Vol. 16, 450-464, 1999.
doi:10.1175/1520-0426(1999)016<0450:EOWIEO>2.0.CO;2
25. Sevruk, B., M. Ondras, and B. Chvila, "The WMO precipitation measurement intercomparisons," Atmos. Res., Vol. 92, 376-380, 2009.
doi:10.1016/j.atmosres.2009.01.016
26. Fiser, O., M. Schoenhuber, and P. Pesice, "First results of DSD measurement by video distrometer in the Czech republic in 1998-1999," Studia Geophysica et Geodetica, Vol. 46, No. 3, 485-505, 2002.
doi:10.1023/A:1019591002211
27. Adimula, I. A. and G. O. Ajayi, "Variation in raindrop size distribution and specific attenuation due to rain in Nigeria," Ann. Telecom., Vol. 51, No. 1-2, 87-93, 1996.
28. Timothy, K. I., J. T. Ong, and E. B. L. Choo, "Raindrop size distribution using method of moments for terrestrial and satellite communication applications in Singapore," IEEE Transactions on Antennas and Propagation, Vol. 50, 1420-1424, Oct. 2002.
29. Afullo, T. J. O., "Raindrop size distribution modeling for radio link design along the eastern coast of South Africa," Progress In Electromagnetics Research B, Vol. 34, 345-366, 2011.
30. Mandeep, J. S. and K. Tanaka, "Effect of atmospheric parameters on satellite links," Int. Journal Millimeter Wave, Vol. 28, No. 10, 789-795, 2007.
doi:10.1007/s10762-007-9269-x
31. Kumar, L. S., Y. H. Lee, J. X. Yeo, and J. T. Ong, "Tropical rain classification and estimation of rain from Z-R (reflectivity-rain rate) relationships," Progress In Electromagnetics Research B, Vol. 32, 107-127, 2011.
doi:10.2528/PIERB11040402
32. Gunn, R. and G. D. Kinzer, "The terminal velocity of fall for water droplets in stagnant air," Journal Atmos. Sci., Vol. 6, No. 4, 243-248, 1949.
33. Vivekanandan, J., G. Zhang, and E. Brandes, "Polarimetric radar rain estimators based on constrained gamma drop size distribution model," J. Appl. Meteorology, Vol. 43, No. 2, 217-230, 2004.
doi:10.1175/1520-0450(2004)043<0217:PREBOA>2.0.CO;2
34. Kozu, T. and K. Nakamura, "Rainfall parameter estimation from dual-radar measurements combining reflectivity profile and path-integrated attenuation," J. Atmos. Oceanic Tech., Vol. 8, No. 2, 259-270, 1991.
doi:10.1175/1520-0426(1991)008<0259:RPEFDR>2.0.CO;2
35. Ulbrich, C. W., "Natural variation in the analytical form of the raindrop size distribution," J. Climate Appl. Meteoro., Vol. 22, 1764-1775, 1983.
doi:10.1175/1520-0450(1983)022<1764:NVITAF>2.0.CO;2
36. Timothy, K. I., S. Sharma, M. Devi, and A. K. Barbara, "Tropical raindrop size distribution (RDS): Prediction and modeling its effects on microwave propagation," Proceedings of 9th International Conference on Antennas and Propagation, 244-248, Eindhoven, The Netherlands, Apr. 4-7, 1995.
37. Pan, W., P. Leung, W. Huang, and W. Liu, "On interval estimation of the coefficient of variation for three-parameter Weibull, lognormal and gamma distribution: A simulation-based approach," European Journal of Operational Research, Vol. 164, 367-377, 2005.
doi:10.1016/j.ejor.2003.04.005
38. Ong, J. T. and Y. Y. Shan, "Raindrop size distribution models for Singapore: Comparison with results from different regions," Proc. 10th Intl. Conf. on Ant. & Prop., Vol. 436, 2.281-2.285, 1997.
39. Ong, J. T., K. I. Timothy, T. Kozu, J. W. F. Goddard, J. Eastment, C. Wilson, and J. Tan, "Studies on tropical rainfall structure with RAL S-band radar, TRMM PR and radiosonde-inter comparison," Proc. --- European Geophysical Society, XXVI General Assembly, France, Mar. 2001.
40. Jiang, H., M. Sano, and M. Sekine, "Weibull raindrop-size distribution and its application to rain attenuation," IEE Proc., Microwave, Antenna Propagation, Vol. 144, No. 3, 197-200, Jun. 1997.
doi:10.1049/ip-map:19971193
41. Yeo, T. S., P. S. Kooi, M. S. Leong, and L. W. Li, "Tropical raindrop size distribution for the prediction of rain attenuation of microwaves in the 10-40 GHz band," IEEE Transactions on Antennas and Propagation, Vol. 49, No. 1, 80-82, Jan. 2001.
doi:10.1109/8.910533
42. International Telecommunication Union "Specific attenuation model for rain for use in prediction methods,", Recommendation ITU-R, P.838-3, Geneva, 2005.
43. Willmott, C. J. and K. Matsuura, "Advantages of the mean absolute error (MAE) over the root mean square error (RMSE) in assessing average model performance," Climate Research, Vol. 30, 79-82, Dec. 2005.
doi:10.3354/cr030079
44. Olsen, R., D. Rogers, and D. Hodge, "The aRb relation in the calculation of rain attenuation," IEEE Transactions on Antennas and Propagation, Vol. 26, No. 2, 318-329, 1978.
doi:10.1109/TAP.1978.1141845
45. Da Silva Mello, L. and M. S. Pontes, "Unified method for the prediction of rain attenuation in satellite and terrestrial links," Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol. 11, No. 1, Jun. 2012.