caicos ETM_009_045_2009-10-17
        


 
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
 
caicos ETM_009_045_2009-10-17



Final calibration diagram
 

  • -cWL/0.500/0.630/0.500/0.500
  • -dLsw0000/02.0/0000/0000
A windy and stufy day, complex atmosphere
the glint corelation is not very good
Lmred=10




PlotZ23  RLBbg=1.20
regression
PlotZZ  RLBbg=1.20
regression