Data Set Information
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| DATA_SET_NAME |
MGN V RADAR SYSTEM DERIVED MIDR COMPRESSED TWICE V1.0
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| DATA_SET_ID |
MGN-V-RDRS-5-MIDR-C2-V1.0
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| NSSDC_DATA_SET_ID |
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| DATA_SET_TERSE_DESCRIPTION |
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| DATA_SET_DESCRIPTION |
Data Set Overview : Compressed Twice Mosaicked Image Data Records (C2-MIDRs) consist of mosaics generated by computing 3x3 pixel arithmetic moving averages from the C1-MIDRs. Each C2-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 C2-MIDR has 7168 lines (aligned with latitudes) and 8192 samples, arranged as 56 1024x1024 files on CD-ROM. C2-MIDRs, with their 675 m pixel widths, are designed to cover the planet at reasonably high resolution and high signal to noise ratio. The 1024x1024 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 C2-MIDR frame covers 45 degrees of latitude and longitude. Thirty-four C2-MIDRs were generated during the first mapping cycle. Note: The C2-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 C2-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 : 1990-09-16 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 : 1.35 Sampling Parameter Interval : 0.675 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-C1-V1.0 Software : IDPS Product Data Set ID : MGN-V-RDRS-5-MIDR-C2-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
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| DATA_SET_RELEASE_DATE |
1992-01-01T00:00:00.000Z
|
| START_TIME |
1990-09-16T12:00:00.000Z
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| STOP_TIME |
1994-01-12T12:00:00.000Z
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| MISSION_NAME |
MAGELLAN
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| MISSION_START_DATE |
1989-05-04T12:00:00.000Z
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| MISSION_STOP_DATE |
1994-10-12T12:00:00.000Z
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| TARGET_NAME |
VENUS
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| TARGET_TYPE |
PLANET
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| INSTRUMENT_HOST_ID |
MGN
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| INSTRUMENT_NAME |
RADAR SYSTEM
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| INSTRUMENT_ID |
RDRS
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| INSTRUMENT_TYPE |
RADAR
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| NODE_NAME |
Geosciences
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| ARCHIVE_STATUS |
ARCHIVED
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| CONFIDENCE_LEVEL_NOTE |
Overview : Unknown
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| CITATION_DESCRIPTION |
Pettengill, G., MGN V RADAR SYSTEM DERIVED MIDR COMPRESSED TWICE V1.0, MGN-V-RDRS-5-MIDR-C2-V1.0, NASA Planetary Data System, 1992
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| ABSTRACT_TEXT |
This data set contains the Magellan Compressed Twice Mosaicked Image Data Records (C2-MIDRs) which consists of mosaics generated by computing 3x3 pixel arithmetic moving averages from the C1-MIDRs. Each C2-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 C2-MIDR has 7168 lines (aligned with latitudes) and 8192 samples, arranged as 56 1024x1024 files on CD-ROM. C2-MIDRs, with their 675 m pixel widths, are designed to cover the planet at reasonably high resolution and high signal to noise ratio.
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| PRODUCER_FULL_NAME |
Unknown
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| SEARCH/ACCESS DATA |
Imaging Planetary Image Atlas
Geosciences Web Services
Geosciences Online Archives
Imaging Online Data Volumes
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