PDS_VERSION_ID = PDS3
RECORD_TYPE = STREAM
OBJECT = TEXT
INTERCHANGE_FORMAT = ASCII
PUBLICATION_DATE = 2009-02-06
NOTE = "N/A"
END_OBJECT = TEXT
END
MGS Solar Conjunction Raw Data Archive
Mars Mapping Phase
(MGS-SUN-RSS-1-ROCC-V1.0)
AAREADME.TXT
Original file by
Elias Barbinis
Jet Propulsion Laboratory
4 September 2001
File modified at PDS PPI Node
6 February 2009
==============================================================================
INTRODUCTION
==============================================================================
This PDS data archive contains archival raw, and ancillary/supporting
radio science data for the Solar Conjunction in 2000 acquired during the Mars
Mapping (MAP) phase of the Mars Global Surveyor (MGS) mission. The radio
observations were carried out using the MGS spacecraft and Earth-based
receiving stations of the NASA Deep Space Network (DSN). The Solar
Conjunction took place on 00/183.
==============================================================================
VOLUME INFORMATION
==============================================================================
The primary data types for this volume are the DSN Original Data Record
(ODR), and the Archival Tracking Data File (ATDF or TDF). ODR files are stored
in the ODR directory. The ATDF are considered backup data to the ODR; those
files are stored in the TDF directory.
The primary data files are accompanied by ancillary files. There are
seven ancillary file types that are organized into directories of their own.
These include the Channelized DSN Monitor Data Files (MCH Directory),
the Monitor Channel Tables, (MCT Directory), the Sequence of Events file
(SOE directory), the Spacecraft and Planetary Kernel file (SPK directory),
the DSN Weather files (WEA directory), the Ionosphere Media Calibration
files (ION directory), and the Troposphere Media Calibration files
(TRO directory).
The CATALOG directory contains summary information on the MGS mission,
the spacecraft, radio science instrumentation, and the data set. These
files are structured (to facilitate machine handling) but are also intended
to be readable.
The diagram below shows the organization of the volume, starting from
the root of the volume.
root
|
|- AAREADME.TXT
|- ERRATA.TXT
|- VOLDESC.CAT
|-CHECKSUMS.TXT
|
|- CATALOG
| |
| |- CATINFO.TXT PDS catalog files
| |- MISSION.CAT for mission, host, instrument,
| |- INSTHOST.CAT references, personnel, data set
| |- INST.CAT and target
| |- REF.CAT
| |- PERSON.CAT
| |- DATASET.CAT
| `- TARGET.CAT
|
|- DOCUMENT
| |
| |- DOCINFO.TXT Overview of directory
| |- TK_FTP.TXT Ephemeris documentation
| |- TK_DESCR.TXT
| |- TK_INSTL.TXT
| |- TRK_2_21.TXT TDF SIS document
| `- ...
|
|- INDEX List of data files
|
|- DATA
|- ION
|- MCH
|- MCT
|- ODR
|- SOE
|- SPK
|- TDF
|- TRO
`- WEA
==============================================================================
ERRATA
==============================================================================
A cumulative list of errors and changes is maintained in the file
ERRATA.TXT.
==============================================================================
DISC FORMAT
==============================================================================
This file (AAREADME.TXT), a PDS volume object definition (VOLDESC.CAT),
and the listing of errors and changes (ERRATA.TXT) are included at the
root level. The following directories of descriptive material are also
at the root level:
CATALOG contains descriptive files for cataloging the data
in this archive.
DOCUMENT contains a plain text Software Interface Specification
(SIS) for data types (if available), directions on how
to obtain NAIF SPICE software, and other documentation.
INDEX contains index information on each of the data files
included in this archive.
The data files and their detached PDS labels are in the DATA directory at
the root level.
==============================================================================
FILE FORMAT
==============================================================================
All data files in the archive are accompanied by detached PDS labels,
which describe their contents. PDS TEXT objects have attached labels.
Detached labels have the same file name as the data file except that the
label name has the suffix "LBL". Detached PDS labels for multi-file documents
have distinctive file names ending with ".LBL".
Detailed documentation on file structure is available for some file types
in Software Interface Specifications in the DOCUMENT directory. ODR and
TDF files have full PDS labels which describe format and content completely.
For other file types, where no electronic version of the SIS was available,
the PDS label provides a reference to a hard copy document. See the
DESCRIPTION keyword in each PDS label.
Text files (*.TXT file names) and catalog files (*.CAT file names) are
stream files.
==============================================================================
SOFTWARE
==============================================================================
Software for parsing 8- and 12-bit samples from ODR data records has
been developed at several institutions to support NASA flight projects.
Because parsing must be done at the bit level and the code is usually written
for a narrow platform-specific application, no software has been included as
part of this archival product.
==============================================================================
DISCLAIMER
==============================================================================
Although considerable care has gone into making this volume set, errors
are both possible and likely. Users of the data are advised to exercise the
same caution as they would when dealing with any other unknown data set.
Reports of errors or difficulties would be appreciated. Please contact
one of the persons listed below.
==============================================================================
COGNIZANT PERSONNEL
==============================================================================
This archive is based on a set of two archival data volumes originally
published on CD-ROM. The person most directly responsible for construction
and release of those original discs is Elias Barbinis, Member of the Radio
Science Systems Group at the Jet Propulsion Laboratory. Many people
contributed to the volume set.
Elias Barbinis
Jet Propulsion Laboratory
4800 Oak Grove Drive
M/S: 264-860
Pasadena, CA 91109-8099
Tel: 818-393-0661
FAX: 818-393-9282
Elias.Barbinis@jpl.nasa.gov
Richard Woo
Principal Investigator for Solar Conjunction
Jet Propulsion Laboratory
4800 Oak Grove Drive
M/S: 238-725
Pasadena, CA 91109-8099
Tel: 818-354-3945
FAX: 818-354-2825
Richard.Woo@jpl.nasa.gov
David D. Morabito
Investigator for Solar Conjunction
Jet Propulsion Laboratory
4800 Oak Grove Drive
M/S: 161-260
Pasadena, CA 91109-8099
Tel: 818-354-2424
FAX: 818-393-4643
David.D.Morabito@jpl.nasa.gov
Richard A. Simpson
PDS Radio Science Adviser
Center for Radar Astronomy
Packard Building - Room 332
Stanford University
Stanford, CA 94305-9515
Tel: 650-723-3525
FAX: 650-723-9251
rsimpson@magellan.stanford.edu
The archive in its present form contains the same primary data files
as the original two-disc set. It was produced at the PPI Node of the PDS.
PDS Operator
c/o Dr. Raymond Walker
3845 Slichter Hall
UCLA - IGPP
Los Angeles, CA 90095-1567
Tel: 310-206-6073
pds_operator@igpp.ucla.edu
==============================================================================
ACRONYMS AND ABBREVIATIONS
==============================================================================
ATDF Archival Tracking Data File (same as TDF)
CD Compact Disc
DSN Deep Space Network
ION Ionosphere Calibration file (file and/or directory)
MCH DSN Monitor - Channelized data (file and/or directory)
MCT Monitor Channel Table
MGS Mars Global Surveyor
NASA National Aeronautics and Space Administration
ODR Original Data Record (file and/or directory)
PDS Planetary Data System
RSS Radio Science Subsystem
SOE Sequence of Operations (file and/or directory)
SPK Spacecraft and Planet Kernel (file and/or directory)
TDF Tracking Data File (file and/or directory)
TRO Troposphere Calibration File (file and/or directory)
WEA DSN Weather (file and/or directory)
|