What sort of radiometric and positional accuracy can I expect from ALOS images?

At the time of product release by JAXA and ACRES in late 2006, the full pre-launch data specifications have not yet been achieved. Hence current ALOS products should be considered preliminary. Further improvements in specifications are expected by around April 2007 after further calibration and validation.In the interim, ACRES will be enhancing the positional accuracy of AVNIR-2 Map Oriented products by automatically matching the AVNIR-2 data to ACRES Landsat orthocorrected panchromatic reference image.

The ERMapper and ENVI headers which accompany AVNIR-2 Map Oriented CEOS format products will be updated to reflect the improved positioning. This change will not be reflected in the CEOS image data and internal metadata - only the headers. However the GEOTIFF format option will however contain the improved positioning information.

Please refer to our ALOS web pages for the ALOS geometric and radiometric specifications. More.

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