Title :
Raindrop modelling for high frequency propagation studies
Author :
Browne, D.R. ; Flint, J.A. ; Pomeroy, S.C.
Author_Institution :
Dept. of Electron. & Electr. Eng., Loughborough Univ., Loughborough, UK
Abstract :
At UHF and EHF wavelengths, air-born precipitation has a significant attenuating and depolarising effect on transmitted radio signals. Analysis of these effects in the time domain, using methods such as the Transmission Line Matrix (TLM) method requires an accurate reproduction of the raindrop geometry in order to obtain the most relevant results. This paper discusses the characteristics of different mathematical models for representing raindrops of various sizes. Justification for the selection of the Beard & Chuang Model as the preferred geometrical model is provided, along with details of implementing a raindrop model in CST MicroStripes and conducting simulations using a square cross-section waveguide. Discussion regarding use of the geometry data as part of a larger investigation is also included.
Keywords :
HF radio propagation; UHF radio propagation; geometry; time-domain analysis; waveguides; CST MicroStripes; EHF wavelength; TLM method; UHF wavelength; air-born precipitation; attenuating effect; depolarising effect; geometrical model; high-frequency propagation studies; radio signal transmission; raindrop geometry; raindrop modelling; square cross-section waveguide; time domain analysis; transmission line matrix method; Atmospheric modeling; Data models; Geometry; Mathematical model; Microstrip; Rain; Shape;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2011 Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4577-1014-8
Electronic_ISBN :
978-1-4577-1015-5
DOI :
10.1109/LAPC.2011.6114080
