PDS_VERSION_ID      = PDS3                                                    
RECORD_TYPE         = FIXED_LENGTH                                            
RECORD_BYTES        = 80                                                      
OBJECT              = TEXT                                                    
  PUBLICATION_DATE    = 2007-09-12                                            
  NOTE                = "Description of contents of CATALOG directory "       
END_OBJECT          = TEXT                                                    
END                                                                           
                                                                              
                                                                              
      The CATALOG directory contains mission, host, instrument, reference,    
personnel, and data set 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 3.7, 20 March 2006; JPL D-7669, Part 2).         
                                                                              
     Each catalog object is in ASCII, with a maximum of 80 characters per     
line.  Each line is delimited with a carriage-return (ASCII 13) line-feed     
(ASCII 10) pair.                                                              
                                                                              
     The files are:                                                           
                                                                              
                                                                              
CATINFO.TXT                                                                   
                                                                              
     A description of the contents of the CATALOG directory (this file).      
                                                                              
                                                                              
MISSION.CAT                                                                   
                                                                              
     A brief description of the mission.  It includes a chronology of events, 
definition of mission phases, and science objectives.                         
                                                                              
                                                                              
INSTHOST.CAT                                                                  
                                                                              
     A description of the Mars Global Surveyor spacecraft and a very brief    
overview of the NASA Deep Space Network.                                      
                                                                              
                                                                              
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. 
                                                                              
                                                                              
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.         
                                                                              
                                                                              
PERSON.CAT                                                                    
                                                                              
     A listing of key people involved in analyzing the radio data and in      
producing the archival data set.                                              
                                                                              
                                                                              
DATASET.CAT                                                                   
                                                                              
     A description of the data set contained in the archival volume.          
Brief discussions of the coverage and quality of the data are included.       
                                                                              
                                                                              
TARGET.CAT                                                                    
                                                                              
     A listing of key physical properties of Mars.