DATA_SET_DESCRIPTION |
Data Set Overview
=================
This data set contains data that is used to assess the morphology,
topography, and geologic context of each rover site, to determine
surface color and mineralogic properties, and to constrain, aerosol
physical and radiative properties. The calibration has removed bias,
dark current, and flatfield effects from the raw Pancam Science EDRs
and resulted in the generation of estimated radiance-on-sensor data
from Pancam, in units of W/m^2/nm/sr. No geometric or camera-model
calibrations or transformations have been applied. For details, see
the MER/Pancam Data Users Guide distributed with the PDS archive.
Processing
==========
MER Camera Payload 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.
MER Camera Payload EDRs and RDRs will be generated by JPL's
Multimission Image Processing Laboratory (MIPL) under the OPGS
subsystem of the MER GDS. RDRs will also be generated by the Athena
Pancam Science and Microscopic Imager Science Teams under the SOAS
subsystem of the GDS.
RDR data products will be generated by, but not limited to, MIPL
using the Mars Suite of VICAR image processing software at JPL, the
Athena Pancam Science Team using IDL software at Cornell University
and JPL, and the Microscopic Imager Science Team using ISIS software
at USGS (Flagstaff) and JPL. 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 this SIS. Additional
meta-data may be added by the software to the PDS label.
There may be multiple versions of a MER Camera RDRs.
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
========
MER Camera Payload downlink processing software is focused on rapid
reduction, calibration, and visualization of images in order to make
discoveries, to accurately and expeditiously characterize the
geologic environment around the rover, and to provide timely input
for operational decisions concerning rover navigation and Instrument
Deployment Device (IDD) target selection. Key software tools have
been developed at Cornell University, at JPL by the MIPL, SSV, and
APSS groups, at NASA Ames, and at the USGS/Flagstaff. These tools
can also be used to process MI images (see below), as well as Navcam
and Hazcam images, which have substantial scientific potential in
addition to their operational importance
PDS-labeled images and tables can be viewed with the program
NASAView, developed by the PDS and available for a variety of
computer platforms from the PDS web site
http://pdsproto.jpl.nasa.gov/Distribution/license.html.
There is no charge for NASAView.
Media/Format
============
The data set will initally be delivered and kept online. Upon
Mission completion, the Pancam RDRs will be delivered to PDS on DVD.
|