[GRASS-user] i.atcorr with ASTER L1B

[Markus Neteler]

Hi Stefan,

On Sun, Jul 26, 2009 at 1:27 PM, Stefan Sylla<stefansylla at gmx.de> wrote:
>
> Hi Markus,
>
> can you explain what the filter functions should contain? I guess it is
> something about the sensor calibration parameters. I could give you that,
> but I need to know the details.

it is a table of values describing the filter function at equidistant
wavelength.
See this file for examples (various sensors):

http://trac.osgeo.org/grass/browser/grass/branches/develbranch_6/imagery/i.atcorr/Iwave.cpp

For each sensor band the filter function is needed. Typically it can be
provided even by the data distributor.

Best regards
Markus