Data Set Overview : The roughness map contains surface roughness estimates at each pixel in an XYZ image. The roughness is computed as the maximum peak-to-peak deviation from the local plane. Units are meters; that is, a pixel value of 0.05 means that the local surface about that pixel has a maximum peak-to-peak deviation along the surface normal by 0.05m (5cm). Roughness values above some useful threshold (maximum roughness) are clipped to that threshold. If a roughness could not be computed for a pixel (e.g. because of lack of range data, or too much noise in the range data), then the roughness value at that pixel will be set to the bad roughness value (which must be greater than maximum roughness). More information is found in ALEXANDERETAL2008, BOSETAL2007, and KELLERETAL2008. Processing : Phoenix RAC RDRs are considered Level 3 (Calibrated Data equivalent  to NASA Level 1-A), Level 4 (Resampled Data equivalent to NASA Level  1-B), or Level 5 (Derived Data equivalent to NASA Level 1-C, 2 or 3).  The RDRs are to be reconstructed from Level 2 edited data, and are  to be assembled into complete images that may include radiometric  and/or geometric correction. Phoenix RAC instrument EDRs and RDRs will be generated by JPL's  Multimission Instrument Processing Laboratory (MIPL) as part of the  OPGS subsystem of the Phoenix GDS. RDRs will also be generated by  the RAC science instrument team at the SOC facility at the  University of Arizona, as well as at its home institution, Texas  A&M. RDR data products will be generated by, but not limited to, MIPL  using the Mars Suite of VICAR image processing software at JPL, and  the RAC science instrument team using TAMCAL and RACCAL software at  the SOC facility at the University of Arizona and at the team's home  institution at Texas A&M Univerisity. The RDRs produced will be  'processed' data. The input will be one or more Camera EDR or RDR  data products and the output will be formatted according to the data  product SIS [ALEXANDERETAL2008]. Additional meta-data may be added by the software to the PDS label. Data : RDR products generated by MIPL will have a VICAR label wrapped by a PDS label, and their structure can include the optional EOL label after the binary data. RDR products not generated by MIPL may contain only a PDS label. Or, RDR products conforming to a standard other than PDS, such as JPEG compressed or certain Terrain products, are acceptable without a PDS header during mission operations, but may not be archivable. The RDR data product is comprised of radiometrically decalibrated and/or camera model corrected and/or geometrically altered versions of the raw camera data, in both single and multi-frame (mosaic) form. Most RDR data products will have PDS labels, or if generated by MIPL (OPGS), dual PDS/VICAR labels. Non-labeled RDRs include JPEG compressed products and the Terrain products. Software : The MIPL Mars Program Suite was used to generate these RDRs. Media/Format : The data set will initially be delivered and kept online. Upon Mission completion, the RAC Operations RDRs will be delivered to PDS  on DVD.

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