Optical calibration, bathymetry, water column correction and bottom typing of shallow marine areas, using passive remote sensing imageries
WV2 and WV2P at Florida West Coast,
ETM, ALI and HYPERION at Florida Keys
HICO at Key Largo


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1 - NO NEED for field data, nor for atmospheric correction
2 - this is demonstrated in this website, using a variety of hyper/multi spectral data
 
Requirements are
1 - homogeneous water body and atmosphere
2 - some coverage of optically deep water
3 - some coverage of dry land
 
Problems are
1 - the precision on estimated depth is found wanting, because the noise-equivalent change in radiance  of accessible data is too high for shallow water column correction work 
2 - radiance data should be preprocessed by the provider at level 1 in order to improve S/N ratio
3 - exponential decay: the deeper/darker the bottom, the poorer the performances
 
So
I keep digging
until suitable data
become available
 
 
Florida West Coast
WorldView 2
  December 29th 2011, 8875*14996, 2 m ground resolution
"(c) DigitalGlobe, Inc. All Rights Reserved; Includes copyrighted material of DigitalGlobe, Inc."
 
Watch DigitalGlobe's bathymetry webinar 2013
work done in 2012

Florida Keys
ETM, ALI, HYPERION

images by USGS/GLOVIS
please refer to
"Properties of Shallow Water Environments Retrieved from Hyper-and-Multi-Spectral Space-Borne Sesnors" by ZhongPing Lee et al., 2006, US-NRL (pdf)
"
Bathymetry of shallow coastal regions derived from space-borne hyperspectral sensor" by ZhongPing Lee et al, US-NRL (pdf)
see also QuickBird  densham NRL (pdf)
NASA's RST Sect3/Sect3_9.html

 
work done in 2010