Data Set Information
DATA_SET_NAME CH1-ORB MOON MINI-RF 1 PACKETIZED DATA RECORD V1.0
DATA_SET_ID CH1-ORB-L-MRFFR-1-PDR-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : The Raw Packetized Data Records (PDRs) are in the form of raw binary telemetry in Consultative Committee for Space Data systems (CCSDS) packet format that have been extracted from frames downlinked from the instrument. PDRs have duplications removed and include any ancillary information needed to understand what is in a given packet. They are retained so that future researchers can reproduce the higher-level products if they so desire. These data will not be reformatted or processed further and are delivered to the PDS with detached minimal PDS labels. Because the higher-level products can be reprocessed as often as desired, there may be a one-to-many relationship a raw data product to a processed data product. Parameters : See individual SIS documents, which are located in the DOCUMENT directory, for detailed descriptions of each file contained in this data archive. Processing : A minimal PDS label accompanies each raw data file and gives only a high-level description of the content and format. Data : The formats of these packets are identical, but their contents differ. Each of these packets is composed of five segments: the CCSDS Primary Header which contains packet identification information, the CCSDS Secondary Header which contains the packet time stamp, the Science Header which contains associated metadata, the Science Data which contains the data samples, and a trailer (Other Data) which contains transmission information. Byte values are 8-bits long, Integer values are 32-bits long, short (integers) are 16-bits long, and floating point values are 32-bit IEEE numbers. These data only are provided in big-endian format. The science data are time-ordered and consist of Vertical (V) or Horizontal (H) polarization channel samples contained within a pulse. The packets will contain either H or V channel data, never both in the same packet. The V/H Channel Indicator flag in the Science Header indicates if the data are H or V channel. Data gaps in the derived products or breaks in the sequence count field in the primary CCSDS packet header would indicate missing packets. Please see documentation in the DOCUMENT directory for additional information on the data files and their format. These data are stored in the DATA/SAR//RAW directory on archival volumes. File names are described in MRFFR_DP_SIS.PDF. Ancillary Data : Each raw science product is accompanied by a text metadata file that contains the parameters that describe the state the instrument was in at the time of data collection and location and timing information about the data set. This file is referenced in the PDS label associated with the science data product. This data set includes the complete set of Mini-SAR SPICE data files (kernels), which can be accessed using SPICE software from the PDS NAIF Node (http://naif.jpl.nasa.gov/naif/). The SPICE data contain geometric and other ancillary information needed to recover the full value of science instrument data. In particular SPICE kernels provide spacecraft and planetary ephemerides, instrument mounting alignments, spacecraft orientation, and data needed for relevant time conversions. The SPICE files are in the GEOMETRY directory of this archive. See GEOMTERY/GEOMINFO.TXT for more information. Housekeeping Data : Instrument housekeeping data is included with this data set. These data are provided in text files in comma separated value (CSV) spreadsheet-type format. Coordinate System : Raw data products are not dependent on definition of a coordinate system. Software : No software is included with this archival data set. Media/Format : These products are delivered on a hard-drive or by ftp and not on a specific formatted medium.
DATA_SET_RELEASE_DATE 3000-01-01T00:00:00.000Z
START_TIME 2008-01-01T12:00:00.000Z
STOP_TIME N/A (ongoing)
MISSION_NAME CHANDRAYAAN-1
MISSION_START_DATE 2008-10-22T12:00:00.000Z
MISSION_STOP_DATE 2009-08-28T12:00:00.000Z
TARGET_NAME MOON
TARGET_TYPE SATELLITE
INSTRUMENT_HOST_ID CH1-ORB
INSTRUMENT_NAME MINI-RF FORERUNNER
INSTRUMENT_ID MRFFR
INSTRUMENT_TYPE RADAR
NODE_NAME Geosciences
ARCHIVE_STATUS LOCALLY_ARCHIVED
CONFIDENCE_LEVEL_NOTE Overview : Data in this data are collected from orbits around the Moon. Review : This archival data set was reviewed by the Mini-RF Team prior to submission to the Planetary Data System (PDS). Prior to creation of the final version of the archival data set, key elements of the archive were distributed for preliminary review. These included electronic versions of example PDS labels, CATALOG files, and Software Interface Specifications. These materials were distributed to PDS personnel, the experiment investigator, and others, as appropriate. Data Coverage and Quality : The coverage on each archival volume is associated with the orbit number.
CITATION_DESCRIPTION Chandrayaan-1 Forerunner Raw Data Set V1.0, CH1-ORB-L-MRFFR-1-PDR-V1.0, NASA Planetary Data System, 2009.
ABSTRACT_TEXT This data set contains archival raw data acquired from the Mini-RF (Forerunner) instrument during the Chandrayaan-1 mission.
PRODUCER_FULL_NAME MINI-RF POC
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