PDS_VERSION_ID               = PDS3                                           
RECORD_TYPE                  = FIXED_LENGTH                                   
RECORD_BYTES                 = 1024                                           
FILE_RECORDS                 = 300                                            
^IMAGE                       = "9132S00A.SRI"                                 
INSTRUMENT_HOST_NAME         = "MARS GLOBAL SURVEYOR"                         
TARGET_NAME                  = "MARS"                                         
INSTRUMENT_NAME              = "RADIO SCIENCE SUBSYSTEM"                      
DATA_SET_ID                  = "MGS-M-RSS-5-SDP-V1.0"                         
PRODUCT_ID                   = "9132S00A.SRI"                                 
PRODUCT_RELEASE_DATE         = 2001-01-28                                     
DESCRIPTION                  = "This file contains a 2-D array in             
 image format showing power vs frequency and time near a Mars Global          
 Surveyor radio occultation.  A nominal image is made from 300                
 512-point power spectra where the spacing between spectra is 0.2048 s        
 and the frequency spanned is 2500 Hz (4.88 Hz resolution).  Images           
 show the spacecraft carrier emerging from occultation (egress) or            
 disappearing as the spacecraft goes behind the limb (ingress).  Near         
 the occultation time there may be a weak surface echo racing away from       
 the carrier to lower frequencies (egress) or coming in from higher           
 frequencies to merge with the carrier at occultation (ingress).              
                                                                              
 The keywords for start and stop time give the beginning and ending of        
 data recording for the occultation.  For exact times of each spectrum        
 see the Surface Reflection Table file that corresponds to this image         
 (same file name except for suffix .SRT).                                     
                                                                              
 This image was produced by Dick Simpson of the MGS Radio Science             
 Team."                                                                       
                                                                              
START_TIME                   = 1999-05-12T18:00:00                            
STOP_TIME                    = 1999-05-12T18:10:00                            
SOFTWARE_NAME                = "SURF2PDS;2000-06-26"                          
PRODUCT_CREATION_TIME        = 2000-07-26T19:48:07                            
PRODUCER_ID                  = "MGS RST"                                      
                                                                              
OBJECT                       = IMAGE                                          
  LINES                        = 300                                          
  LINE_SAMPLES                 = 512                                          
  SAMPLE_TYPE                  = MSB_INTEGER                                  
  SAMPLE_BITS                  = 16                                           
  UNIT                         = "DECIBEL"                                    
  OFFSET                       = 0.0                                          
  SCALING_FACTOR               = 0.01                                         
  DESCRIPTION                  = "This image contains values of received      
                                  signal power versus frequency and time      
                                  in units of decibels relative to            
                                  one watt. Values can be obtained by         
                                  multiplying the sample in the image by      
                                  SCALING_FACTOR and then adding OFFSET.      
                                  Each line in the image corresponds to       
                                  one power spectrum.  The first line in      
                                  the file is the LAST spectrum.  The         
                                  first point in a line corresponds to        
                                  the lowest frequency (0 Hz)."               
END_OBJECT                   = IMAGE                                          
                                                                              
END