Data Set Information
DATA_SET_NAME MGN V RADAR SYSTEM DERIVED MIDR COMPRESSED THRICE V1.0
DATA_SET_ID MGN-V-RDRS-5-MIDR-C3-V1.0
NSSDC_DATA_SET_ID 89-033B-01E
89-033B-01P
DATA_SET_TERSE_DESCRIPTION The Magellan Compressed Mosaicked Image Data Record (C3-MIDR) archive contains three times compressed mosaics of image swaths (C-BIDRs) at a resolution of 2025 m/pixel.
DATA_SET_DESCRIPTION
Data Set Overview
    =================
      Compressed Thrice Mosaicked Image Data Records (C3-MIDRs)
      consist of mosaics generated by computing 3x3 pixel arithmetic
      moving averages from the C2-MIDRs.  Each C3-MIDR is in a
      sinusoidal equal area projection and has an origin at 0 degrees
      latitude, with the central meridian defined as the longitude
      bisecting the mosaic.  Each C1-MIDR has 7168 lines (aligned
      with latitudes) and 8192 samples, arranged as 56 1024 x 1024
      files on CD-ROM.  C3-MIDRs, with their 2.025 km pixel widths,
      are designed to cover the planet at reasonably high resolution
      and high signal to noise ratio.  The 1024 x 1024 files have a
      VICAR2 format, with embedded VICAR2 labels.  The data have been
      placed on CD-ROMs with documentation, detached Planetary Data
      System labels, and summary tabular information.
 
      One C3-MIDR frame covers 137.5 degrees in latitude and 157
      degrees in longitude, at the equator.  Note: C3-MIDRs also
      exist as photoproducts that have had a linear contrast
      enhancement applied.  Photoproducts are generated from the 7K x
      8K assemblage of files, so there is one photoproduct per
      C3-MIDR.
 
      Finally, in some cases a cross track seam removal process has
      been applied.  See the CONTENTS.TAB file on the relevant MIDR
      CD-ROM volume for information on which MIDRs have been
      seam-corrected.
 
      Please refer to the F-BIDR (MGN-V-RDRS-5-BIDR-FULL-RES-V1.0)
      data set description for more details on radiometric and
      geometric processing of Magellan SAR data.
 
      Processing Level Id            : 5
      Software Flag                  : N
      Processing Start Time          : 1992-01-07T19:55:03.000
      Processing Stop Time           : UNK
 
 
    Parameters
    ==========
 
      Data Set Parameter 'RADAR SCALED BACKSCATTER CROSS SECTION'
      -----------------------------------------------------------
        Cross section values that are scaled by some procedure, such
        as dividing by theoretical or empirical scattering laws.
 
        Data Set Parameter Name        : RADAR SCALED BACKSCATTER
                                           CROSS SECTION
        Data Set Parameter Unit        : DIMENSIONLESS
        Sampling Parameter Name        : PIXEL
        Sampling Parameter Unit        : KILOMETER
        Minimum Sampling Parameter     : N/A
        Maximum Sampling Parameter     : N/A
        Sampling Parameter Resolution  : 4.05
        Sampling Parameter Interval    : 2.025
        Minimum Available Sampling Int : N/A
        Noise Level                    : UNK
 
 
    Source Instrument Parameters
    ============================
      Instrument Host ID              : MGN
      Data Set Parameter Name         : RADAR SCALED BACKSCATTER
                                          CROSS SECTION
      Instrument Parameter Name       : RADAR ECHO POWER
      Important Instrument Parameters : 1
 
 
    Processing
    ==========
 
      Processing History
      ------------------
        Source Data Set ID          : MGN-V-RDRS-5-MIDR-C2-V1.0
        Software                    : IDPS
        Product Data Set ID         : MGN-V-RDRS-5-MIDR-C3-V1.0
 
 
      Software 'IDPS'
      ---------------
        The Image Data Processing Subsystem (IDPS) consists of a
        suite of VICAR routines, augmented with specialized modules,
        to ingest F-BIDRs, produce C-BIDRs, and generate MIDRs.
 
        Software Name               : IDPS
        Software Type               : N/A
        Software Release Date       : N/A
        Node ID                     : IDPT
        Cognizant Engineer          : N/A
        Software Access Description : N/A
DATA_SET_RELEASE_DATE 1992-09-01T00:00:00.000Z
START_TIME 1990-09-16T12:00:00.000Z
STOP_TIME 1994-01-12T12:00:00.000Z
MISSION_NAME MAGELLAN
MISSION_START_DATE 1989-05-04T12:00:00.000Z
MISSION_STOP_DATE 1994-10-12T12:00:00.000Z
TARGET_NAME VENUS
TARGET_TYPE PLANET
INSTRUMENT_HOST_ID MGN
INSTRUMENT_NAME RADAR SYSTEM
INSTRUMENT_ID RDRS
INSTRUMENT_TYPE RADAR
NODE_NAME Geosciences
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE
Overview
    ========
      N/A
CITATION_DESCRIPTION Pettengill, G., MGN V RADAR SYSTEM DERIVED MIDR COMPRESSED THRICE V1.0, MGN-V-RDRS-5-MIDR-C3-V1.0, NASA Planetary Data System, 1992
ABSTRACT_TEXT This data set contains the Magellan Compressed Thrice Mosaicked Image Data Records (C3-MIDRs) which consists of mosaics generated by computing 3x3 pixel arithmetic moving averages from the C2-MIDRs. Each C3-MIDR is in a sinusoidal equal area projection and has an origin at 0 degrees latitude, with the central meridian defined as the longitude bisecting the mosaic. Each C1-MIDR has 7168 lines (aligned with latitudes) and 8192 samples, arranged as 56 1024 x 1024 files on CD-ROM. C3-MIDRs, with their 2.025 km pixel widths, are designed to cover the planet at reasonably high resolution and high signal to noise ratio. The 1024 x 1024 files have a VICAR2 format, with embedded VICAR2 labels. The data have been placed on CD-ROMs with documentation, detached Planetary Data System labels, and summary tabular information.
PRODUCER_FULL_NAME Unknown
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