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Re: aster 1A - [message #59728]

Wed, 09 April 2008 07:24

peter.eddy@shaw.ca
Messages: 19
Registered: March 2005

Junior Member

Hi Mona,
The aster 1A data is in raw DN's and delivered as an HDF formatted
file.

> 1. Can we directly import the DNvalues of image in to radiance in
> ENVI.

The coefficients required for conversion from DN's to radiance data
should be included in the HDF and can be applied in ENVI. There
should also be geolocation information for geometric corrections.

> 2. Is destaggering is necessary for SWIR AND TIR data?

From the LP DAAC site - it seems that they correct for the staggered
SWIR/TIR in the Level 0 processing flow.

See this site for more information
http://edcdaac.usgs.gov/aster/asterprocessing.asp

Regards,
Pete

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Re: aster 1A -

By: peter.eddy@shaw.ca on Wed, 09 April 2008 07:24

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