PDS_VERSION_ID       = PDS3                                                   
RECORD_TYPE          = STREAM                                                 
START_TIME           = 2000-05-14T13:47:20                                    
STOP_TIME            = 2000-05-14T13:56:31                                    
DATA_SET_ID          = "MGS-M-RSS-1-MAP-V1.0"                                 
INSTRUMENT_HOST_NAME = "MARS GLOBAL SURVEYOR"                                 
TARGET_NAME          = MARS                                                   
^PS_DOCUMENT         = "HEA0137A.PS1"                                         
DESCRIPTION          = "                                                      
                                                                              
     This document is one PostScript file (a figure) accompanying the MGS     
     Radio Science Team daily health report (HEA0137A.TXT) for 2000-05-16.    
     'PostScript' is a trademark of Adobe Systems Incorporated."              
                                                                              
OBJECT              = PS_DOCUMENT                                             
 DOCUMENT_NAME       = "FIGURE TO ACCOMPANY HEA0137A.TXT"                     
 PUBLICATION_DATE    = 2000-05-16                                             
 DOCUMENT_TOPIC_TYPE = "DAILY HEALTH REPORT"                                  
 INTERCHANGE_FORMAT  = BINARY                                                 
 DOCUMENT_FORMAT     = "POSTSCRIPT"                                           
 FILES               = 1                                                      
 DESCRIPTION         = "                                                      
                                                                              
  Caption: Panels show 60-second average power spectra from MGS bistatic radar
  experiment.  Horizontal axis gives frequency in units of 10000 Hz (full     
  scale, 25000 Hz).  Vertical axis is in dB with plots spaced by 1 dB.  Time  
  increases by 60 seconds with each plot, bottom to top and starting with     
  13:47:50.   Left panel shows right-circularly polarized (RCP) channel; echo 
  is centered at 10 kHz in first plot, then drifts to lower frequency and may 
  broaden.  Direct signal from spacecraft is narrow spike near 21 kHz,        
  radiated via a sidelobe of the high-gain antenna.  Right panel shows        
  left-circularly polarized (LCP) channel with little or no echo visible, but 
  occasional glimpses of the direct signal.  At these incidence angles on the 
  surface (about 70 degrees) the RCP echo is expected to be the stronger.     
  In both channels, ripple in the bandpass filter is comparable to the echo;  
  it will be removed using a filter characterization based on receiver        
  response with only noise as the input.  Based on the predicted orbit, the   
  MPL/DS2 target area (76.5S, 195W) would have been crossed during            
  acquisition of data in the third spectrum."                                 
                                                                              
END_OBJECT          = PS_DOCUMENT                                             
                                                                              
END