OBJECT                     = DATASET                                          
 DATA_SET_ID               = 'MGN-V-RDRS-5-GDR-REFLECTIVITY-V1.0'             
                                                                              
 OBJECT                     = DATASETINFO                                     
  DATA_SET_NAME          = 'MGN V RDRS 5 GLOBAL DATA RECORD REFLECTIVITY V1.0'
  DATA_SET_COLLECTION_MEMBER_FLG = N                                          
  EVENT_START_TIME          = 1990-09-15T16:22:14.871                         
  EVENT_STOP_TIME           = 1992-09-14T02:27:41.936                         
  NATIVE_START_TIME         = 'N/A'                                           
  NATIVE_STOP_TIME          = 'N/A'                                           
  DATA_OBJECT_TYPE          = 'IMAGE'                                         
  DATA_SET_RELEASE_DATE     = 1992-01-15                                      
  PROCESSING_LEVEL_ID       = 5                                               
  PRODUCER_FULL_NAME        = 'Peter G. Ford'                                 
  PRODUCER_INSTITUTION_NAME = "Massachusetts Institute of Technology"         
  SOFTWARE_FLAG             = N                                               
  DETAILED_CATALOG_FLAG     = N                                               
  PROCESSING_START_TIME     = 1991-06-24T20:11:00                             
  PROCESSING_STOP_TIME      = 1992-12-04T00:55:49                             
  DATA_SET_DESC             = "Global Reflectivity Data Record (GREDR).       
   The power reflection coefficients are derived by fitting altimeter         
   echoes from the fan-beam altimetry antenna as a function of time to        
   Hagfors' radar backscatter model templates. The values are then            
   corrected for the presence of multiple echo peaks and further              
   corrected for diffuse scattering using backscatter data obtained           
   by the side-looking mode of the Magellan radar. The reflectivities         
   are then filtered to remove low-frequency instrument calibration           
   errors, and re-sampled into sinusoidal, Mercator, and north and            
   south polar stereographic projections at a resolution of about 5x5         
   kilometers per pixel.                                                      
                                                                              
   Each GREDR image pixel is represented by a 8-bit unsigned integer.         
   In sinusoidal images, pixels lying outside the domain of the projection    
   are set to zero. In all images, pixels with unknown or unmeasured          
   values are also set to zero. The remaining values are related to           
   the reflectivity by the following equation:                                
                                                                              
       DN = (REFLECTIVITY * 200) + 1                                          
                                                                              
   See:  Software Interface Specification Document (Peter G. Ford,            
   1991, Global Altimetry and Radiometry Data Records, MIT-MGN-GxDR SIS       
   Version 2.3, 40 p.) that is included on GxDR CD-ROMs.                      
                                                                              
   Note:  There exist photoproducts that are identified as GxDRP (where       
   x is E (Emissivity), S (Slope), RE (Reflectivity), or T (Topography))      
   however, they are not generated from the digital GxDR products.  They      
   are instead produced from the Magellan ARCDR (Altimetry and Radiometry     
   Composite Data Record) data files."                                        
                                                                              
  CONFIDENCE_LEVEL_NOTE     = 'UNK'                                           
 END_OBJECT                 = DATASETINFO                                     
                                                                              
 OBJECT                     = DATASETTARG                                     
  TARGET_NAME               = 'VENUS'                                         
 END_OBJECT                 = DATASETTARG                                     
                                                                              
 OBJECT                     = DSPARMINFO                                      
  SAMPLING_PARAMETER_NAME   = 'PIXEL'                                         
  SAMPLING_PARAMETER_RESOLUTION = 9282                                        
  MINIMUM_SAMPLING_PARAMETER = 'N/A'                                          
  MAXIMUM_SAMPLING_PARAMETER = 'N/A'                                          
  SAMPLING_PARAMETER_INTERVAL = 4641                                          
  MINIMUM_AVAILABLE_SAMPLING_INT = 'N/A'                                      
  SAMPLING_PARAMETER_UNIT   = 'METER'                                         
  DATA_SET_PARAMETER_NAME   = 'RADAR-DERIVED FRESNEL REFLECTIVITY'            
  NOISE_LEVEL               = 'UNK'                                           
  DATA_SET_PARAMETER_UNIT   = 'DIMENSIONLESS'                                 
 END_OBJECT                 = DSPARMINFO                                      
                                                                              
 OBJECT                     = SCDSHOST                                        
  INSTRUMENT_HOST_ID        = 'MGN'                                           
  INSTRUMENT_ID             = 'RDRS'                                          
 END_OBJECT                 = SCDSHOST                                        
                                                                              
 OBJECT                     = DSREFINFO                                       
  REFERENCE_KEY_ID          = 'FORD1991'                                      
                                                                              
  OBJECT                     = REFERENCE                                      
   DOCUMENT_TOPIC_TYPE       = 'Software Interface Specification'             
   JOURNAL_NAME              = 'Project Magellan SIS Document'                
   PUBLICATION_DATE          = 1991                                           
   REFERENCE_DESC            = "Peter G. Ford, Global Altimetry and           
    Radiometry Data Record, Project Magellan Software Interface               
    Specification Document MIT-MGN-GxDR, 1991 Version 2.3, 40p."              
                                                                              
   OBJECT                     = REFAUTHORS                                    
    AUTHOR_FULL_NAME          = 'Peter G. Ford'                               
   END_OBJECT                 = REFAUTHORS                                    
                                                                              
  END_OBJECT                 = REFERENCE                                      
                                                                              
 END_OBJECT                 = DSREFINFO                                       
                                                                              
 OBJECT                     = DSREFINFO                                       
  REFERENCE_KEY_ID          = SAUNDERSETAL1990                                
                                                                              
  OBJECT                     = REFERENCE                                      
   DOCUMENT_TOPIC_TYPE       = 'Mission Science'                              
   JOURNAL_NAME              = 'Journal of Geophysical Research'              
   PUBLICATION_DATE          = 1990                                           
   REFERENCE_DESC            = "Saunders, R.S., G.H. Pettengill, R.E.         
    Arvidson, W.L. Sjogren, W.T.K. Johnson, L. Pieri, The Magellan            
    Venus Radar Mapping Mission, Journal of Geophysical Research,             
    1990, Vol 95, pp. 8339-8335"                                              
                                                                              
   OBJECT                     = REFAUTHORS                                    
    AUTHOR_FULL_NAME          = 'R. Stephen Saunders'                         
   END_OBJECT                 = REFAUTHORS                                    
                                                                              
   OBJECT                     = REFAUTHORS                                    
    AUTHOR_FULL_NAME          = 'Gordon H. Pettengill'                        
   END_OBJECT                 = REFAUTHORS                                    
                                                                              
   OBJECT                     = REFAUTHORS                                    
    AUTHOR_FULL_NAME          = 'Raymond E. Arvidson'                         
   END_OBJECT                 = REFAUTHORS                                    
                                                                              
   OBJECT                     = REFAUTHORS                                    
    AUTHOR_FULL_NAME          = 'William T. K. Johnson'                       
   END_OBJECT                 = REFAUTHORS                                    
                                                                              
   OBJECT                     = REFAUTHORS                                    
    AUTHOR_FULL_NAME          = 'Leslie J. Pieri'                             
   END_OBJECT                 = REFAUTHORS                                    
                                                                              
  END_OBJECT                 = REFERENCE                                      
                                                                              
 END_OBJECT                 = DSREFINFO                                       
                                                                              
 OBJECT                     = DSREFINFO                                       
  REFERENCE_KEY_ID          = FORDETAL1992                                    
                                                                              
  OBJECT                     = REFERENCE                                      
   DOCUMENT_TOPIC_TYPE       = 'Mission Science'                              
   JOURNAL_NAME              = 'Journal of Geophysical Research'              
   PUBLICATION_DATE          = 1992                                           
   REFERENCE_DESC            = "Ford, P.G. and G.H. Pettengill, Venus         
    Topography and Kilometer-Scale Slopes, Journal of Geophysical Research,   
    1992, Vol 97, pp. 13103-13114"                                            
                                                                              
   OBJECT                     = REFAUTHORS                                    
    AUTHOR_FULL_NAME          = 'Peter G. Ford'                               
   END_OBJECT                 = REFAUTHORS                                    
                                                                              
   OBJECT                     = REFAUTHORS                                    
    AUTHOR_FULL_NAME          = 'Gordon H. Pettengill'                        
   END_OBJECT                 = REFAUTHORS                                    
                                                                              
  END_OBJECT                 = REFERENCE                                      
                                                                              
 END_OBJECT                 = DSREFINFO                                       
                                                                              
END_OBJECT                 = DATASET                                          
                                                                              
END