Data Set Information
DATA_SET_NAME MSL MARS NAVIGATION CAMERA 2 EDR V1.0
DATA_SET_ID MSL-M-NAVCAM-2-EDR-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : This data set contains images acquired by the Navcams for the support of rover traverse planning, post-traverse assessment, rover localization, operation of the robotic arm, and the selection of science targets. Navcam images will be commanded via ground commands from Earth. The Navcams will be extensively used to acquire end of drive 360-degree panoramas. These panoramas will serve as the primary set of data from which Mastcam and ChemCam targets will be chosen. The Navcam panoramas will also be extensively used for rover traverse planning and generally cover more of the local Martian surface terrain than the Mastcam or Hazcam cameras. The data set is similar to the data set for Navcams on MER [MAKIETAL2003]. Processing : This data set uses the Committee on Data Management and Computation (CODMAC) data level numbering system. The MSL Navcam EDRs are considered Level 2 or Edited Data (equivalent to NASA Level 0). The EDRs are reconstructed from Level 1 or Raw Data. They are assembled into complete images, but are not radiometrically or geometrically corrected. The rover computer will generate Navcam telemetry data products that have some metadata appended to them by the rover. If requested in the command sequence, the rover computer will apply an ICER (lossy or lossless) or LOCO (lossless) image compression algorithm to the image data. After receipt on Earth, processing at JPL will begin with the reconstruction of packetized telemetry data (raw telemetry packet SFDU's with CCSDS headers) into depacketized binary data products and associated Earth metadata files. Then the Multi-mission Image Processing Lab at the Jet Propulsion Laboratory will process the data products and metadata files along with SPICE kernels provided by NAIF and generate the EDRs. The EDRs produced will contain raw uncalibrated data and will have attached operations labels and detached PDS-compliant labels. The MSL Camera EDR/RDR Data Products SIS describes the formatting of the Navcam EDRs. Data : 1) Full Frame EDR Full Frame EDRs are digitized to 12 bits resolution and stored as 16-bit signed integers. The binary data may be returned as 12-bit or 8-bit scaled data. If 12-to-8 bit scaling is performed, then pixels are stored in 16-bit format and only the last 8 bits of the 16-bit integer are used. 2) Thumbnail EDR Thumbnail EDRs are stored as 16-bit signed integers or 8-bit unsigned integers. If 12-to-8 bit scaling is performed, then pixels are stored in 16-bit format and only the last 8 bits of the 16-bit integer are used. The Thumbnail EDR is a spatially downsampled version of the original acquired source image (all EDRs for a particular image are derived from the same source image). For example, in the case of subframe image products, the thumbnail image represents the full-frame contextual image from which the subframe image data was extracted. Note that the original acquired image is not always downlinked, and in some cases thumbnails are the only returned data for a particular observation. The main purposes of a Thumbnail EDR are to provide image previews and contextual information, both at a very low data volume compared to the original image. 3) Sub-frame EDR Sub-frame EDRs are a subset of rows and columns of the 1024 x 1024 full frame image. Sub-frame EDRs are stored as 16-bit signed integers. If 12-to-8 bit scaling is performed, then pixels are stored in 16-bit format and only the last 8 bits of the 16-bit integer are used. 4) Downsampled EDR A downsampled EDR is a smaller version of the 1024 x 1024 full frame or subframed image using the following methods: 1) nearest neighbor pixel averaging, 2) pixel averaging with outlier rejection or 3) computing the median pixel value. Downsampled EDRs are stored as 16-bit signed integers. If 12-to-8 bit scaling is performed, then pixels are stored in 16-bit format and only the last 8 bits of the 16- bit integer are used. Software : Navcam camera downlink processing software used by the science and engineering team during operations 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 Robotic Arm target selection. Navcam images 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://pds.nasa.gov/tools/nasa-view.shtml. There is no charge for NASAView. Media/Format : The data set will be delivered and made available to the public through the Planetary Data System web sites.
DATA_SET_RELEASE_DATE 2013-02-27T00:00:00.000Z
START_TIME 2011-11-26T12:00:00.000Z
STOP_TIME N/A (ongoing)
MISSION_NAME MARS SCIENCE LABORATORY
MISSION_START_DATE 2003-10-01T12:00:00.000Z
MISSION_STOP_DATE N/A (ongoing)
TARGET_NAME MARS
TARGET_TYPE PLANET
INSTRUMENT_HOST_ID MSL
INSTRUMENT_NAME NAVIGATION CAMERA LEFT STRING A
NAVIGATION CAMERA LEFT STRING B
NAVIGATION CAMERA RIGHT STRING A
NAVIGATION CAMERA RIGHT STRING B
INSTRUMENT_ID NAV LEFT A
NAV LEFT B
NAV RIGHT A
NAV RIGHT B
INSTRUMENT_TYPE CAMERA
NODE_NAME Imaging
ARCHIVE_STATUS ARCHIVED_ACCUMULATING
CONFIDENCE_LEVEL_NOTE NULL
CITATION_DESCRIPTION Maki, Justin, MSL Mars Navigation Camera EDR V1.0, NASA Planetary Data System, MSL-M-NAVCAM-2-EDR-V1.0, 2013.
ABSTRACT_TEXT Unknown
PRODUCER_FULL_NAME Justin Maki
SEARCH/ACCESS DATA
  • Imaging Planetary Image Atlas
  • Imaging Online Data Volumes
  • MSL Analysts Notebook
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