HICO at Saint Andrews Bay, Georgia
work done in april 2015

return to HICO

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
I keep digging
until suitable data
become available

The data
logarithmic enhancement
TCC deglinted
logarithmic enhancement
deglinting is not possible


Glint regressions

deglinting based on NIR band-28 is not possible


NOS bathymetry
Please refer to "Bathymetry Estimations Using Vicariously Calibrated HICO Data" 2013 Lewis, Gould, Weidemann, Ladner and Lee

Location of Profile Blue


These three profiles cross the 6-10 m deep channel described by NOS data
There is clearly no optically shallow bottom detection