Title :
Lognormal model for Singapore raindrop size distribution
Author :
Shan, Y.Y. ; Ong, J.T. ; Lee, Y.H. ; Nguyen, T.T.
Author_Institution :
Microwave, Time & Frequency Metrology, SPRING Singapore
Abstract :
Raindrop size distribution has been measured in Singapore (1deg20´N, 103deg41´E) for evaluating the rain effects on microwave propagation. In this paper, a lognormal model suitable for the region is proposed which is useful for the prediction of rain attenuation. Using the measured data, different estimators for the lognormal model are used to study the performance and find the optimal estimator for the region. It was concluded that the lognormal model with maximum likelihood estimates is an optimal theoretical model for the raindrop size distribution in Singapore
Keywords :
maximum likelihood estimation; microwave propagation; rain; tropospheric electromagnetic wave propagation; Singapore raindrop size distribution; lognormal model; maximum likelihood estimation; microwave propagation; rain attenuation prediction; Attenuation; Frequency; Maximum likelihood estimation; Metrology; Microwave propagation; Predictive models; Rain; Size measurement; Springs; Time measurement;
Conference_Titel :
Information, Communications and Signal Processing, 2005 Fifth International Conference on
Conference_Location :
Bangkok
Print_ISBN :
0-7803-9283-3
DOI :
10.1109/ICICS.2005.1689202
