Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102202
Title: Controlled time integration for the numerical simulation of meteor radar reflections
Authors: Räbinä, J.
Mönkölä, S.
Rossi, T.
Markkanen, J.
Gritsevich, M.
Muinonen, K.
Issue Date: 2016
Publisher: Elsevier Ltd
Citation: Controlled time integration for the numerical simulation of meteor radar reflections / J. Räbinä, S. Mönkölä, T. Rossi, et al. — DOI 10.1016/j.jqsrt.2016.02.009 // Journal of Quantitative Spectroscopy and Radiative Transfer. — 2016. — Vol. 178. — P. 295-305.
Abstract: We model meteoroids entering the Earth[U+05F3]s atmosphere as objects surrounded by non-magnetized plasma, and consider efficient numerical simulation of radar reflections from meteors in the time domain. Instead of the widely used finite difference time domain method (FDTD), we use more generalized finite differences by applying the discrete exterior calculus (DEC) and non-uniform leapfrog-style time discretization. The computational domain is presented by convex polyhedral elements. The convergence of the time integration is accelerated by the exact controllability method. The numerical experiments show that our code is efficiently parallelized. The DEC approach is compared to the volume integral equation (VIE) method by numerical experiments. The result is that both methods are competitive in modelling non-magnetized plasma scattering. For demonstrating the simulation capabilities of the DEC approach, we present numerical experiments of radar reflections and vary parameters in a wide range. © 2016 Elsevier Ltd.
Keywords: DISCRETE EXTERIOR CALCULUS
ELECTROMAGNETIC SCATTERING
METEORS
PLASMATIC OBJECTS
RADAR REFLECTIONS
VOLUME INTEGRAL EQUATION
CALCULATIONS
EARTH ATMOSPHERE
FINITE DIFFERENCE TIME DOMAIN METHOD
INTEGRAL EQUATIONS
MAGNETOPLASMA
NUMERICAL METHODS
NUMERICAL MODELS
RADAR
RADAR REFLECTION
DISCRETE EXTERIOR CALCULUS
ELECTROMAGNETIC SCATTERING
METEORS
PLASMATIC OBJECTS
VOLUME INTEGRAL EQUATION
TIME DOMAIN ANALYSIS
ELECTROMAGNETIC METHOD
METEOR
NUMERICAL METHOD
PLASMA
RADAR
SCATTERING
URI: http://hdl.handle.net/10995/102202
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84991383977
PURE ID: 864732
b633a486-0e7a-4310-a0ed-c71985e3766c
ISSN: 224073
DOI: 10.1016/j.jqsrt.2016.02.009
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

Files in This Item:
File Description SizeFormat 
2-s2.0-84991383977.pdf1,52 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.