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Bowles, J. H., Navel Research Laboratory, Washington DC, USA, jeff.bowles@nrl.navy.mil
Gillis, D. ., Naval Research Laboratory, Washington DC, USA, david.gillis@nrl.navy.mil
Lamela, G. M., Naval Research laboratory, Washington DC, USA, lamela@nrl.navy.mil
Patterson, K. W., Naval Research Laboratory, Washington DC, USA, karen.patterson@nrl.navy.mil

RETRIEVAL OF IOPS, BATHYMETRY, AND BOTTOM TYPE INFORMATION FROM HICO DATA

A Lookup Table approach to retrieving IOPs, bathymetry and bottom type information has been applied to HICO imagery. The LUT spectra are generated using EcoLight and uses known bottom type information. As many as one million calculated spectra that span the expected range of parameters are used. The comparison metric used is the unweighted Euclidean distance. In clear water examples, such as the Bahamas, it is shown that mixed bottoms are important to consider. In particular, adding mixtures at the 50/50 or 75/25 ratios, shows improved matches between the measured and calculated spectra. The level of mixed bottoms that must be represented in the LUT is important because adding many mixtures slows down the processing to unacceptable levels. As an alternative to adding spectra to the LUT, an optimal estimation step may be helpful.

Session #:121
Date: 2/20/2012
Time: 15:15
Location: Room 250

Presentation is given by student: No