PDS_VERSION_ID      = PDS3
RECORD_TYPE         = STREAM
OBJECT              = TEXT
  PUBLICATION_DATE    = 2001-07-03
  NOTE                = "Description of contents of CATALOG directory "
END_OBJECT          = TEXT
END


      The CATALOG directory contains mission, host, instrument, reference,
personnel, data set, and target PDS catalog objects for this archive volume.
The files follow the 'streamlined' format adopted by the Planetary Data
System (PDS) in late 1993 and documented in the Planetary Data System
Standards Reference (Version 3.1, 3 August 1994; JPL D-7669, Part 2).

     Each catalog object is an ASCII stream file.

     The files are:


MGS_MISSION.CAT

     A brief description of the mission.  It includes a chronology of events,
definition of mission phases, and science objectives.


MGS_INST_HOST.CAT

     A description of the Mars Global Surveyor spacecraft and a very brief
overview of the NASA Deep Space Network.


MGS_RSS_INST.CAT

     An overview of the spacecraft radio system used for these experiments on
Mars Global Surveyor, and a summary (albeit long) description of the Deep
Space Network instrumentation which supports radio science experiments.  Also
included are summaries of the science objectives sought using the instrument.


MGS_SUN_RSS_REF.CAT
     A listing of references used elsewhere in the catalog files and of
references that might be generally useful in working with these data.


MGS_SUN_RSS_PERSON.CAT

     A listing of key people involved in analyzing the Solar Conjunction
     radio data and in producing the archival data set.


MGS_SUN_RSS_DS.CAT

     A description of the data set contained in the archival volumes.  The
file includes information on the primary data types included in the archive
collection.


MGS_SUN_RSS_TARGET.CAT

     A listing of key physical properties of the Sun, some of which
are the object of research based on data in this archival volume.