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Coherence equations governing propagation through random media
Author(s) -
Beran Mark J.
Publication year - 1975
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs010i001p00015
Subject(s) - isotropy , coherence (philosophical gambling strategy) , anisotropy , limit (mathematics) , wavelength , homogeneous , mathematical analysis , physics , mathematics , statistical physics , optics , quantum mechanics
In this paper we consider the equations governing the second‐ and fourth‐order coherence functions in random media. We first treat radiation propagating in a homogeneous and isotropic random medium in the limit of small wavelengths. We summarize the solutions that are available and report on some recent unpublished work. We next show how these equations may be generalized to include a nonhomogeneous background and the effects of anisotropy under acoustic conditions. The utility of the equations for considering free‐space propagation is also discussed.