Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1988),
  • paper TUF2

Probabilistic model for optical propagation through a random sea surface for underwater imaging use

Not Accessible

Your library or personal account may give you access

Abstract

Imaging of an underwater object beneath a wind-ruffled random sea surface requires the determination of undersurface (random refraction) and above surface (random reflection and scattering) point spread function (PSF). A finite element analysis was employed assuming a point source taken below the surface, and a large but definite number of rays was propagated through the surface to give a cumulative distribution there. The direction that each ray continues after interacting with a random facet of the sea surface is itself a random function. The probability density of the spherical coordinate angles of the emerging rays that have been emitted from the source (underwater) at arbitrary angles was derived. Figure 1 shows the 1-D probability density for a ray propagating at an arbitrary angle from the vertical and through a random surface for different wave slope variances. For the large, but finite, number of rays that leave the point source, an incoherent sum of the many emergent probability densities about the surface will give a measure proportional to the expected field intensity. This incoherent sum thus yields the desired PSF.

© 1988 Optical Society of America

PDF Article
More Like This
Splitting images into transparent and opaque components using Markov random fields

Daniel Kersten and Heinrich H. Bulthoff
FD6 OSA Annual Meeting (FIO) 1988

Optical Constant Determination of Magneto-optical Thin Film Using Surface Plasmon Resonance Phenomenon

Y. Mao, H.A. Macleod, and K. Balasubramanian
WC17 Optical Interference Coatings (OIC) 1988

Random walk theory of photon migration in biological tissue

R. Nossal and Robert F. Bonner
THD4 OSA Annual Meeting (FIO) 1988

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved