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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 18 — Jun. 20, 1998
  • pp: 3793–3803

Ocean optical source estimation with widely spaced irradiance measurements

Lydia K. Sundman, R. Sanchez, and N. J. McCormick  »View Author Affiliations


Applied Optics, Vol. 37, Issue 18, pp. 3793-3803 (1998)
http://dx.doi.org/10.1364/AO.37.003793


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Abstract

A method was developed for determining the spatial distribution of a source from downward and upward irradiance measurements at a single wavelength in seawater of known optical properties. The algorithm uses measurements at two depths located an arbitrary distance apart and solves two nonlinear equations for two parameters that fit a globally exponential or linear source shape. Complex spatially dependent source shapes can be estimated from an irradiance profile by piecing together estimates from neighboring measurement pairs. Numerical tests illustrate the sensitivity of the algorithm to depth, measurement spacing, chlorophyll concentration, sensor noise, and uncertainty in the a priori assumed inherent optical properties. The algorithm works well with widely spaced measurements, moderate sensor noise, and uncertainties in the optical properties regardless of whether the assumed and true profiles are the same shape.

© 1998 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(030.5620) Coherence and statistical optics : Radiative transfer
(100.3190) Image processing : Inverse problems
(260.2510) Physical optics : Fluorescence
(290.5860) Scattering : Scattering, Raman

History
Original Manuscript: August 18, 1997
Revised Manuscript: February 24, 1998
Published: June 20, 1998

Citation
Lydia K. Sundman, R. Sanchez, and N. J. McCormick, "Ocean optical source estimation with widely spaced irradiance measurements," Appl. Opt. 37, 3793-3803 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-18-3793


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