Detection of intensity fluctuations in a random medium with a finite aperture detector

Reuven Mazar, Mark Rozental

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A high-frequency electromagnetic wave propagating through a randomly inhomogeneous medium will create random intensity pattern whose spatial structure is a function of the radiation wavelength and the parameters of the medium. The ability to detect the spatial variation and to find correlation between different patterns depends on the ratio between the receiver aperture and the characteristic spatial scale of the speckle. In this work, using the multiscale expansion solutions for the nonaveraged coherence functions, we have constructed expressions for the integral correlation characteristics and performed a qualitative analysis of the correlation dependences as functions of range and detector aperture for media with Gaussian and power-law refractive index fluctuation spectra. Numerical computations are presented and comparison with the asymptotic results obtained for the strong scattering regime is performed.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Pages136-146
Number of pages11
ISBN (Print)0819412104, 9780819412102
DOIs
StatePublished - 1 Jan 1993
Event8th Meeting on Optical Engineering in Israel: Optical Engineering and Remote Sensing - Tel Aviv, Isr
Duration: 14 Dec 199216 Dec 1992

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1971
ISSN (Print)0277-786X

Conference

Conference8th Meeting on Optical Engineering in Israel: Optical Engineering and Remote Sensing
CityTel Aviv, Isr
Period14/12/9216/12/92

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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