Title :
Electromagnetic scattering by oscillating rain drops of asymmetric shapes
Author :
Sekeljic, Nada J. ; Manic, Ana B. ; Chobanyan, Elene ; Thurai, Merhala ; Bringi, V.N. ; Notaros, Branislav M.
Author_Institution :
Electr. & Comput. Eng, Colorado State Univ., Fort Collins, CO, USA
Abstract :
Computational electromagnetic analysis of scatting by oscillating rain drops with asymmetric shapes is presented. Mixed-mode oscillations of drops are attributed to sustained drop collisions in events having a highly organized line convection embedded within a larger rain system. The scattering matrix and differential reflectivity of drops are dependent on the particular oscillation modes and different time instants within the oscillation cycle. The results also demonstrate the superiority of the higher order method of moments over the conventional discrete dipole approximation method in oscillating rain drop analysis.
Keywords :
S-matrix theory; approximation theory; atmospheric electromagnetic wave propagation; computational electromagnetics; method of moments; rain; asymmetric shapes; computational electromagnetic analysis; differential drop reflectivity; discrete dipole approximation method; drop collisions; electromagnetic scattering; higher order method of moments; larger rain system; line convection; mixed-mode oscillations; oscillating rain drops; scattering matrix; Computational modeling; Mathematical model; Method of moments; Oscillators; Rain; Scattering; Shape;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6905112
