The Landsat 8 OLI images with terrain correction are not useful for atmospheric correction aims. I would need the radiance image acquires by sensor without processing; the geometrical parameters of the acquisition (view zenith and azimuth angles); the spectral response function of the OLI channels. Can I get them somewhere? Can someone help me? Thanks
As far as I know the L8 OLI products are available in the L1gT - Geometrically corrected or L1T - Orthorectified formats as can be seen in the metadata file associated with the L8 data. The spectral response of OLI can be found here
http://landsat.gsfc.nasa.gov/?p=5779
Have you tried contacting the Earth Resources Observation and Science (EROS) Center at Sioux Falls, South Dakota at [email protected] for the raw L8 product ? May be they can help.
Good luck!
https://lta.cr.usgs.gov/L8
http://atmcorr.gsfc.nasa.gov/atm_corr.html
http://landsat.usgs.gov/tools_access_all_faqs.php
https://earth.esa.int/web/guest/data-access/latest-data-products/-/article/landsat-oli-tirs-european-coverage
http://glovis.usgs.gov/
http://earthexplorer.usgs.gov/
http://landsatlook.usgs.gov/
The spreadsheet for OLI bands solves the convolution aim.
Regarding the uncorrected OLI images, from the links I'm reading that only 1LT and L1gT products are available to users download.
I'll try to contact EROS as you suggest.
Thanks very much!
I think Landsat OLI images are not terrain corrected (using slope and aspect to delineate spectral effect of terrain morphology) but terrain orthorectified (georefenced) using GCPs or DEMs. The product is delivered in 16-bit unsigned integer format and can be rescaled to the Top Of Atmosphere (TOA) reflectance and/or radiance using radiometric rescaling coefficients provided in the product metadata file (MTL file).
Regards
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