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
|
SEARCH/ACCESS DATA |
Imaging Planetary Image Atlas
Geosciences Web Services
Geosciences Online Archives
Imaging Online Data Volumes
|
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