Journal ArticleDOI
Scattering of electromagnetic waves from random media with strong permittivity fluctuations
Leung Tsang,Jin Au Kong +1 more
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TLDR
In this article, a theory for vector electromagnetic wave propagation in a random medium with large permittivity fluctuations and with anisotropic correlation function was derived by taking into account the singularity of the dyadic Green's function in the renormalization method.Abstract:
By taking into account the singularity of the dyadic Green's function in the renormalization method, a theory is derived for vector electromagnetic wave propagation in a random medium with large permittivity fluctuations and with anisotropic correlation function. The strong fluctuation theory is then applied to a discrete scatterer problem in which the permittivity can assume only two values. The results are found to be consistent with those derived from discrete scatterer theory for all values of dielectric constants of the scatterers.read more
Citations
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Retrieval of Regional Snow Water Equivalent from Space-Borne Passive Microwave Observations
TL;DR: In this paper, the feasibility of space-borne microwave radiometers for monitoring the evolution of snow cover in a drainage area is investigated using four winter sets of SSM/I radiometer observations for the 51,000 km 2 River Kemijoki drainage area, Northern Finland, are used for analyses.
Journal ArticleDOI
Effective medium theories for artificial materials composed of multiple sizes of spherical inclusions in a host continuum
TL;DR: In this paper, the authors present the application of non-empirical effective medium theories to describe composite mixtures of spherical inclusions within a host continuum and show that Bruggeman's asymmetric formula corresponds best with experiment for large differences between the complex permittivities of the host and inclusion materials.
Journal ArticleDOI
Modelling and simulation of dielectric heterostructures: a physical survey from an historical perspective
TL;DR: In this article, the authors reviewed basic physical concepts and theoretical ideas concerning dielectric heterostructures from a historical perspective and concluded that computational techniques provide a versatile tool for studying the dielectrics properties of complex composite materials and that considerable progress can be achieved by comparing numerical results against analytical predictions for the properties of these models.
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Computational electromagnetics and the rational design of new dielectric heterostructures
TL;DR: In this article, an ab initio computational technique can be used to accurately characterize structure-dielectric property relationships of periodic heterostructures in the quasistatic limit, where equal-sized inclusions, with shape and orientation, are fixed in a periodic square (2D) or cubic (3D) array.
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Dust opacities in dense regions
TL;DR: In this paper, the formation of dust aggregates by the coagulation of grains is considered, and different methods for the calculation of the optical properties of fluffy particles are discussed.
References
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Book
Wave propagation and scattering in random media
TL;DR: This IEEE Classic Reissue presents a unified introduction to the fundamental theories and applications of wave propagation and scattering in random media and is expressly designed for engineers and scientists who have an interest in optical, microwave, or acoustic wave propagate and scattering.
Journal ArticleDOI
Multiple scattering of waves. ii. the effective field in dense systems
TL;DR: In this paper, the propagation constant of the coherent wave in the scatterer medium differs from the vacuum constant by a factor that is defined as the ratio of the effective field to the average field.
Journal ArticleDOI
Elastic, Electromagnetic, and Other Waves in a Random Medium
Frank C. Karal,Joseph B. Keller +1 more
TL;DR: In this paper, the average wave in a random medium is analyzed on the assumption that the medium differs slightly from a homogeneous medium, where the deviation of the medium from homogeneity is measured.
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