<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I believe these are what you're looking for.<div><br></div><div><a href="http://www.science.aster.ersdac.or.jp/en/about_aster/sensor/excel/SPEC_ROFILES.LZH">http://www.science.aster.ersdac.or.jp/en/about_aster/sensor/excel/SPEC_ROFILES.LZH</a></div><div><br></div><div>Cheers,</div><div><br></div><div>Mike</div><div><br></div><div><br><div><div>On 26-Jul-09, at 10:56 AM, Markus Neteler wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi Stefan,<br><br>On Sun, Jul 26, 2009 at 1:27 PM, Stefan Sylla<<a href="mailto:stefansylla@gmx.de">stefansylla@gmx.de</a>> wrote:<br><blockquote type="cite"><br></blockquote><blockquote type="cite">Hi Markus,<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">can you explain what the filter functions should contain? I guess it is<br></blockquote><blockquote type="cite">something about the sensor calibration parameters. I could give you that,<br></blockquote><blockquote type="cite">but I need to know the details.<br></blockquote><br>it is a table of values describing the filter function at equidistant<br>wavelength.<br>See this file for examples (various sensors):<br><br><a href="http://trac.osgeo.org/grass/browser/grass/branches/develbranch_6/imagery/i.atcorr/Iwave.cpp">http://trac.osgeo.org/grass/browser/grass/branches/develbranch_6/imagery/i.atcorr/Iwave.cpp</a><br><br>For each sensor band the filter function is needed. Typically it can be<br>provided even by the data distributor.<br><br>Best regards<br>Markus<br>_______________________________________________<br>grass-user mailing list<br>grass-user@lists.osgeo.org<br>http://lists.osgeo.org/mailman/listinfo/grass-user<br></div></blockquote></div><br></div></body></html>