PDS_VERSION_ID = PDS3 /* FILE FORMAT AND LENGTH */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 1377 FILE_RECORDS = 1285 LABEL_RECORDS = 3 /* POINTERS TO START RECORDS OF OBJECTS IN FILE */ ^IMAGE_HISTOGRAM = 4 ^IMAGE = 5 /* IMAGE DESCRIPTION */ DATA_SET_ID = "MGS_MOLA-DIM-V1.0" FILE_NAME = DJ.MDM3 SPACECRAFT_NAME = MARS_GLOBAL_SURVEYOR TARGET_NAME = MARS SOFTWARE_NAME = "mola2mdim3(1.0)" SOURCE_PRODUCT_ID = MGS-MOLA-DIM INSTRUMENT_NAME = MARS_ORBITER_LASER_ALTIMER PRODUCT_CREATION_TIME = 2002-03-30T14:16:54 PRODUCER_FULL_NAME = "THOMAS.C.DUXBURY" PRODUCER_INSTITUTION_NAME = "JET PROPULSION LABORATORY" DESCRIPTION = "MOLA DIMs are produced by reprojecting MOLA DIMs IN 2000 IAU areocentric coordinates to 2000 IAU areographic coordinates in a simple sinusoidal map projection" /* DESCRIPTION OF OBJECTS CONTAINED IN FILE */ OBJECT = IMAGE_HISTOGRAM ITEMS = 256 ITEM_TYPE = SIGNED_INTEGER ITEM_BITS = 8 END_OBJECT = IMAGE_HISTOGRAM OBJECT = IMAGE ENCODING_TYPE = "N/A" LINES = 1281 LINE_SAMPLES = 1377 SAMPLE_TYPE = UNSIGNED_INTEGER SAMPLE_BITS = 8 SAMPLE_BIT_MASK = 2#11111111# LINE_PREFIX_BYTES = 0 CHECKSUM = "N/A" END_OBJECT = IMAGE OBJECT = IMAGE_MAP_PROJECTION_CATALOG ^DATA_SET_MAP_PROJECTION_CATALOG = "MOLA_MDM3.LBL" MAP_PROJECTION_TYPE = SINUSOIDAL MAP_RESOLUTION = 256 MAP_SCALE = 234 COORDINATE_SYSTEM_NAME = PLANETOGRAPHIC POSITIVE_LONGITUDE_DIRECTION = WEST CENTRAL_MERIDIAN = 269.998135 MINIMUM_LATITUDE = -62.500000 MAXIMUM_LATITUDE = -57.500000 WESTERNMOST_LONGITUDE = 275.000000 EASTERNMOST_LONGITUDE = 264.996270 MARS_EQUATORIAL_RAIUS = 3396.0000 MARS_POLAR_RADIUS = 3376.8000 PRIME_MERIDIAN_J2000 = 176.630000 SUB_SOLAR_LATITUDE = 12.580000 SUB_SOLAR_LONGITUDE = 217.370000 LINE_PROJECTION_OFFSET = 14718.500000 SAMPLE_PROJECTION_OFFSET= -688.500000 CENTRAL_PIXEL_LINE = 641 CENTRAL_PIXEL_SAMPLE = 689 CENTRAL_PIXEL_LATITUDE = -60.000000 CENTRAL_PIXEL_LONGITUDE = 269.998135 X_AXIS_LAST_PIXEL = 1281 Y_AXIS_LAST_PIXEL = 1377 MAP_PROJECTION_ROTATION = "N/A" NOTE: ="For the simple sinusoidal map projection, translating between image sample S and line L coordinates and areocentric latitude LAT / longitude LNG coordinates is achieved by: S = (LNG-CENTRAL_MERIDIAN)*MAP_RESOLUTION*COS(LAT) + RECORD_BYTES/2 + 1 L = (MAXIMUM_LATITUDE-LAT)*MAP_RESOLUTION + 1 or LAT = MAXIMUM_LATITUDE-(L-1)/MAP_RESOLUTION LNG = (S-RECORD_BYTES/2-1)/(MAP_RESOLUTION*COS(LAT)) + CENTRAL_MERIDIAN with S,L,LAT,LNG being contrained within the min/max limits." END_OBJECT = IMAGE_MAP_PROJECTION_CATALOG END ÆTŠ Ó  | Ô  ³ µ D »ˆ>át‘2øñž£êʹ!ê$0&e(<)+-¿/e0è3‚5K9,