PDS_VERSION_ID            = "PDS3"

RECORD_TYPE               = FIXED_LENGTH
FILE_RECORDS              = 720
RECORD_BYTES              = 11520

/*** GENERAL DATA DESCRIPTION PARAMETERS ***/
PRODUCT_VERSION_ID        = "V2.0"
DATA_SET_ID               = "MESS-E/V/H-MLA-4-GDR-V1.0"
PRODUCT_ID                = "HDEM_16"
STANDARD_DATA_PRODUCT_ID  = "MLASCIENCEGDR"
INSTRUMENT_HOST_NAME      = "MESSENGER"
INSTRUMENT_NAME           = "MERCURY LASER ALTIMETER"
INSTRUMENT_ID             = "MLA"
MISSION_PHASE_NAME        = {"MERCURY 1 FLYBY","MERCURY 2 FLYBY",
                            "MERCURY ORBIT","MERCURY ORBIT YEAR 2",
                            "MERCURY ORBIT YEAR 3","MERCURY ORBIT YEAR 4",
                            "MERCURY ORBIT YEAR 5"}
TARGET_NAME               = MERCURY
START_TIME                = 2008-01-14
STOP_TIME                 = 2015-04-30
PRODUCT_CREATION_TIME     = 2016-12-10
PRODUCT_RELEASE_DATE      = 2016-05-06
PRODUCER_ID               = MESSENGER_MLA_TEAM
PRODUCER_FULL_NAME        = "DAVID E. SMITH"
PRODUCER_INSTITUTION_NAME = "NASA/GODDARD SPACE FLIGHT CENTER"
DESCRIPTION               = "This data product is a cylindrically 
   projected shape map (radius) of the northern hemisphere of Mercury 
   at a resolution of 2.66097 km/pix by 2.66097 km/pix, based on 
   altimetry data acquired through the Mercury Orbit Year 5 Mapping Phase
   by the MLA instrument.  MLA altimetry data are the source for
   this data set. Ground tracks were interpolated using the Generic
   Mapping Tools program 'surface'.  The map is in the form of a 
   binary table with one row for each 0.0625 degrees of latitude, pixel 
   registered.  Map values are relative to a radius of 2439.4 km.

   This label describes an IMG file.  This raster image is composed of a set 
   of pixels that represent finite areas, and not discrete points. The 
   center of the upper left pixel is defined as line and sample (1,1). The
   [LINE,SAMPLE]_PROJECTION_OFFSET elements are the pixel offset from line 
   and sample (1.0,1.0) to the map projection origin (defined by the      
   CENTER_LATITUDE and CENTER_LONGITUDE elements).  These offset values  
   are positive when the map projection origin is to the right or below 
   the center of the upper left pixel.  
"

^IMAGE                  = "HDEM_16.IMG"
OBJECT                  = IMAGE
    NAME                  = HEIGHT
    DESCRIPTION           = "Each sample represents height relative to a
       reference radius (OFFSET) and is generated using preliminary LOLA
       data
       produced by the LOLA team."
    MISSING_CONSTANT      = -32768
    LINES                 = 1728
    LINE_SAMPLES          = 5760
    MAXIMUM               = 9344
    MINIMUM               = -11190
    SAMPLE_TYPE           = LSB_INTEGER
    SAMPLE_BITS           = 16
    UNIT                  = METER
    SCALING_FACTOR        = 0.5
    OFFSET                = 2439400
END_OBJECT              = IMAGE

/* Conversion from Digital Number to HEIGHT, i.e. elevation in meters, is: */
/* HEIGHT = (DN * SCALING_FACTOR).                                         */
/* The conversion from Digital Number to PLANETARY_RADIUS in meters is:    */
/* PLANETARY_RADIUS = (DN * SCALING_FACTOR) + OFFSET                       */

OBJECT                    = IMAGE_MAP_PROJECTION
 ^DATA_SET_MAP_PROJECTION     = "DSMAP.CAT"
 MAP_PROJECTION_TYPE          = "SIMPLE CYLINDRICAL"
 MAP_RESOLUTION               = 16 <pix/deg>
 A_AXIS_RADIUS                = 2439.4 <km>
 B_AXIS_RADIUS                = 2439.4 <km>
 C_AXIS_RADIUS                = 2439.4 <km>
 FIRST_STANDARD_PARALLEL      = 'N/A'
 SECOND_STANDARD_PARALLEL     = 'N/A'
 POSITIVE_LONGITUDE_DIRECTION = EAST
 CENTER_LATITUDE              = 0 <deg>
 CENTER_LONGITUDE             = 180 <deg>
 REFERENCE_LATITUDE           = 'N/A'
 REFERENCE_LONGITUDE          = 'N/A'
 LINE_FIRST_PIXEL             = 1
 LINE_LAST_PIXEL              = 1728
 SAMPLE_FIRST_PIXEL           = 1
 SAMPLE_LAST_PIXEL            = 5760
 MAP_PROJECTION_ROTATION      = 0.0
 MAP_SCALE                    = 2.66097 <km/pix>
 MAXIMUM_LATITUDE             = 90 <deg>
 MINIMUM_LATITUDE             = -18 <deg>
 WESTERNMOST_LONGITUDE        = 0 <deg>
 EASTERNMOST_LONGITUDE        = 360 <deg>
 LINE_PROJECTION_OFFSET       = 1439.5 <pixel>
 SAMPLE_PROJECTION_OFFSET     = 2879.5 <pixel>
 COORDINATE_SYSTEM_TYPE       = "BODY-FIXED ROTATING"
 COORDINATE_SYSTEM_NAME       = "PLANETOCENTRIC"
END_OBJECT                    = IMAGE_MAP_PROJECTION

END