PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 312 FILE_RECORDS = 180 ^INDEX_TABLE = "INDEX.TAB" VOLUME_ID = "LRM_90XX" DATA_SET_ID = "ARCB/NRAO-L-RTLS/GBT-4/5-70CM-V1.0" INSTRUMENT_HOST_NAME = {"ARECIBO OBSERVATORY","NATIONAL RADIO ASTRONOMY OBSERVATORY"} INSTRUMENT_NAME = {"RADIO TELESCOPE","ROBERT C. BYRD GREEN BANK TELESCOPE"} OBJECT = INDEX_TABLE INTERCHANGE_FORMAT = ASCII ROW_BYTES = 312 ROWS = 180 COLUMNS = 29 INDEX_TYPE = SINGLE OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = PATH_NAME DATA_TYPE = CHARACTER START_BYTE = 2 BYTES = 11 DESCRIPTION = "The full directory path to the file." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = FILE_NAME DATA_TYPE = CHARACTER START_BYTE = 16 BYTES = 23 DESCRIPTION = "The name of the file containing a data product's PDS label." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = PRODUCT_ID DATA_TYPE = CHARACTER START_BYTE = 42 BYTES = 19 DESCRIPTION = "A permanent, unique identifier assigned to a data product by its producer." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = PRODUCT_CREATION_TIME DATA_TYPE = TIME START_BYTE = 63 BYTES = 10 DESCRIPTION = "UTC date when this product was created, in the format yyyy-mm-dd." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = FEATURE_NAME DATA_TYPE = CHARACTER START_BYTE = 75 BYTES = 14 DESCRIPTION = "Name of a prominent feature within the 'quad' of interest. Feature after which each 'quad' is named." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = LATITUDE DATA_TYPE = REAL START_BYTE = 91 BYTES = 5 UNIT = DEGREE DESCRIPTION = "Latitude of radar target, in degrees. Target is defined as the location where the radar beam center was pointed." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = LONGITUDE DATA_TYPE = REAL START_BYTE = 97 BYTES = 5 UNIT = DEGREE DESCRIPTION = "Longitude of radar target, in degrees east. Target is defined as the location where the radar beam center was pointed." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = START_TIME DATA_TYPE = TIME START_BYTE = 103 BYTES = 16 DESCRIPTION = "UTC date and time at the beginning of data acquisition for this product, in the format yyyy-mm-ddThh:mm." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = STOP_TIME DATA_TYPE = TIME START_BYTE = 120 BYTES = 16 DESCRIPTION = "UTC date and time at the end of data acquisition for this product, in the format yyyy-mm-ddThh:mm." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = CENTER_FREQUENCY DATA_TYPE = INTEGER START_BYTE = 137 BYTES = 3 UNIT = MEGAHERTZ NOT_APPLICABLE_CONSTANT = -99 DESCRIPTION = "Center frequency of the transmitted signal. In MHz." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 NAME = TRANSMITTED_POLARIZATION_TYPE DATA_TYPE = CHARACTER START_BYTE = 142 BYTES = 14 DESCRIPTION = "Polarization of the signal transmitted by Arecibo." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 NAME = RECEIVED_POLARIZATION_TYPE DATA_TYPE = CHARACTER START_BYTE = 159 BYTES = 19 DESCRIPTION = "Polarization of signal received at the Greenbank Telescope." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 13 NAME = INTEGRATION_PERIOD_PER_LOOK DATA_TYPE = REAL START_BYTE = 180 BYTES = 8 UNIT = SECOND FORMAT = "F8.3" NOT_APPLICABLE_CONSTANT = -999.999 DESCRIPTION = "Integration period that defines the frequency resolution of the synthetic aperture radar image. In seconds." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 NAME = RADAR_PULSE_LENGTH DATA_TYPE = REAL START_BYTE = 189 BYTES = 8 UNIT = MICROSECOND FORMAT = "F8.3" NOT_APPLICABLE_CONSTANT = -999.999 DESCRIPTION = "The length of each transmitted 430-MHz pulse from Arecibo. In microseconds." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 15 NAME = RADAR_PULSE_CODING DATA_TYPE = CHARACTER START_BYTE = 199 BYTES = 4 DESCRIPTION = "The method used to encode a longer pulse to yield a compressed pulse length of shorter duration. Possible choices for the Arecibo 430 MHz transmitter are a 13-element Barker code or None." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 16 NAME = RADAR_RANGE_RESOLUTION DATA_TYPE = REAL START_BYTE = 205 BYTES = 8 UNIT = METER FORMAT = "F8.3" NOT_APPLICABLE_CONSTANT = -999.999 DESCRIPTION = "The spatial resolution of the raw radar observations in range, set by the effective pulse length. Related to the ground-range resolution on the Moon by the local incidence angle. In meters." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 17 NAME = NUMBER_OF_LOOKS DATA_TYPE = INTEGER START_BYTE = 214 BYTES = 4 NOT_APPLICABLE_CONSTANT = -999 DESCRIPTION = "The number of independent observations averaged to yield the reported power value in each image pixel." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 18 NAME = MINIMUM_LATITUDE DATA_TYPE = REAL START_BYTE = 219 BYTES = 5 UNIT = DEGREE DESCRIPTION = "The southernmost latitude in degrees of a spatial area." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 19 NAME = MAXIMUM_LATITUDE DATA_TYPE = REAL START_BYTE = 225 BYTES = 5 UNIT = DEGREE DESCRIPTION = "The northernmost latitude in degrees of a spatial area." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 20 NAME = EASTERNMOST_LONGITUDE DATA_TYPE = REAL START_BYTE = 231 BYTES = 5 UNIT = DEGREE DESCRIPTION = "For Planetocentric coordinates and for Planetographic coordinates in which longitude increases toward the east, the easternmost (rightmost) longitude of a spatial area is the maximum numerical value of longitude unless it crosses the Prime Meridian. In degrees east." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 21 NAME = WESTERNMOST_LONGITUDE DATA_TYPE = REAL START_BYTE = 237 BYTES = 6 UNIT = DEGREE DESCRIPTION = "For Planetocentric coordinates and for Planetographic coordinates in which longitude increases toward the east, the westernmost (leftmost) longitude of a spatial area is the minimum numerical value of longitude unless it crosses the Prime Meridian. In degrees east." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 22 NAME = MAP_PROJECTION_TYPE DATA_TYPE = CHARACTER START_BYTE = 245 BYTES = 19 DESCRIPTION = "Identifies the type of projection charcteristic of a given map." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 23 NAME = CENTER_LATITUDE DATA_TYPE = REAL START_BYTE = 266 BYTES = 5 UNIT = DEGREE DESCRIPTION = "Latitude in degrees at center of map projection." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 24 NAME = CENTER_LONGITUDE DATA_TYPE = REAL START_BYTE = 272 BYTES = 5 UNIT = DEGREE DESCRIPTION = "Longitude at center of map projection, in degrees east." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 25 NAME = LINES DATA_TYPE = INTEGER START_BYTE = 278 BYTES = 4 DESCRIPTION = "The total number of data instances along the vertical axis of an image." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 26 NAME = LINE_SAMPLES DATA_TYPE = INTEGER START_BYTE = 283 BYTES = 4 DESCRIPTION = "The total number of data instances along the horizontal axis of an image." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 27 NAME = SUB_EARTH_LATITUDE DATA_TYPE = REAL START_BYTE = 288 BYTES = 4 UNIT = DEGREE DESCRIPTION = "The latitude of the average location of the sub-radar point during the observing period. Sub-radar point defined as the intersection of the line between the radar and the Moon's center of mass and the surface of a reference sphere. In degrees." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 28 NAME = SUB_EARTH_LONGITUDE DATA_TYPE = REAL START_BYTE = 293 BYTES = 5 UNIT = DEGREE DESCRIPTION = "The longitude of the average location of the sub-radar point during the observing period. Sub-radar point defined as the intersection of the line between the radar and the Moon's center of mass and the surface of a reference sphere. In degrees east." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 29 NAME = DOPPLER_ANGLE DATA_TYPE = REAL START_BYTE = 299 BYTES = 5 UNIT = DEGREE DESCRIPTION = "The average angle between the apparent axis of the Moon's spin during the observation period and the vertical axis on the the plane of the sky. Positive degrees clockwise." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 30 NAME = CENTER_TO_LIMB_BANDWIDTH DATA_TYPE = REAL START_BYTE = 305 BYTES = 6 UNIT = HERTZ FORMAT = "F6.1" NOT_APPLICABLE_CONSTANT = -999.9 DESCRIPTION = "The average apparent frequency difference between the sub-radar point and the limb of the Moon during the observation period. In Hz." END_OBJECT = COLUMN END_OBJECT = INDEX_TABLE END