Minimize AVNIR-2 & PRISM Products and Algorithms

ALOS products follow the standard CEOS format convention. The detailed product format specifications have been defined and are maintained by JAXA.

Detailed information is available here

 

Products Information    |   Processor Releases 

Minimize Processor Release

Release information on the current ALOS Processing Software is available via the JAXA webpage.

There is currently an ESA on-going project, as part of the upgrade to the ALOS MMGS, to develop new L1C processors. The processing chain will contain operational processors to:

  • Import the JAXA Level 1b1 AVNIR-2 products and PRISM products (either in JAXA or ESA-SIP format)
  • Improve the quality of the imported products (de-convolution of PRISM data, generation of quality parameters/layers)
  • Perform geometric corrections for AVNIR-2 and PRISM data, namely
    • image matching for improving the relative geo-location accuracy with an accurate reference image database
    • generating ortho-images using direct geo-referencing with an accurate digital elevation model
  • Export the AVNIR-2 and PRISM data as well as providing logging information (either in DIMAP or ESA-SIP format)
An interface for handling these processors will be added. The following products shall be generated:
  • Level 1B data are JAXA Level 1B1 data not re-sampled, quality-controlled and radiometrically calibrated, spectrally characterised, geometrically characterised, annotated with satellite position and pointing. It consists of Top of Atmosphere (TOA) radiance (W.m-2.sr-1.um-1).
  • Level 1C data are Level 1B data orthorectified, re-sampled to a specified grid. Image re-sampling shall be performed using a selectable re-sampling method including at least bi-cubic convolution interpolation and nearest neighbour.r the ALOS Optical data, PRISM and AVNIR-2.

ALOS data users will be informed in due course once the new Optical processors are available and the ALOS reprocessing activities commence.