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Hello,

I'm wondering where I can find the reference about the Data Filtering CIRRUS algorithm.

And do the TRR3 CRISM data need to be denoised again by the CIRRUS algorithm?As far as I know,the TTR3 data have been filtered by the Ratio Shift Correction and  Iterative Kernel Filter algorithms.

Looking forward to your reply.

Thank you.

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Hi there:

I will see if I can request from the code writers any documentation on the CIRRUS algorithm. I can tell you that there is no need to use any of the CIRRUS functions because the TRR3 I/F data cubes have been through a thorough denoising. I use CRISM data very day and have never used any of the CIRRUS functions. Also, the CRISM Team has generated, and we have posted on the Geosciences site, new versions of denoised cubes, TERs are in sensor space and MTRDRs are projected versions of the TERs. S and L cubes have been joined as one cube. See the CRISM SIS for an explanation of the processing: https://pds-geosciences.wustl.edu/mro/mro-m-crism-2-edr-v1/mrocr_0001/document/crism_dpsis.pdf

Ray Arvidson

PDS Geosciences Node Manager and CRISM Team Member

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