Data Set Information
DATA_SET_NAME MGN V RADAR SYSTEM DERIVED MIDR COMPRESSED ONCE V1.0
DATA_SET_ID MGN-V-RDRS-5-MIDR-C1-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : Compressed Once Mosaic Image Data Records (C1-MIDRs) consist of mosaics generated from compressed basic image data records (C-BIDRs). C-BIDRs have been generated by computing 3x3 pixel arithmetic moving averages from the F-BIDRs. Each C1-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 7K lines (aligned with latitudes) and 8K samples, arranged as 56 1K x 1K files on the CD-ROMs. C1-MIDRs, with their 225m pixel widths, are designed to cover the planet at reasonably high resolution and high signal to noise ratio. The 1K x 1K 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. Over the course of the first mapping cycle, 190 C1-MIDRs have been generated, for a total volume of 10.6 Gbytes. Note: The C1-MIDRs also exist as photoproducts that have had a linear contrast enhancement applied. Photoproducts are generated from 7K x 8K assemblage of files, so there is one photoproduct per C1-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 : 0.65 Sampling Parameter Interval : 0.225 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-BIDR-COMPRESSED-V1.0 Software : IDPS Product Data Set ID : MGN-V-RDRS-5-MIDR-C1-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 1991-09-01T00:00:00.000Z
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 : Unknown
CITATION_DESCRIPTION Pettengill, G., MGN V RADAR SYSTEM DERIVED MIDR COMPRESSED ONCE V1.0, MGN-V-RDRS-5-MIDR-C1-V1.0, NASA Planetary Data System, 1991
ABSTRACT_TEXT This data set contains the Magellan Compressed Once Mosaic Image Data Records (C1-MIDRs) which consists of mosaics generated from compressed basic image data records (C-BIDRs). C-BIDRs have been generated by computing 3x3 pixel arithmetic moving averages from the F-BIDRs. Each C1-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 7K lines (aligned with latitudes) and 8K samples, arranged as 56 1K x 1K files on the CD-ROMs. C1-MIDRs, with their 225m pixel widths, are designed to cover the planet at reasonably high resolution and high signal to noise ratio.
PRODUCER_FULL_NAME Unknown
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