PDS_VERSION_ID                   = PDS3
RECORD_TYPE                      = FIXED_LENGTH
RECORD_BYTES                     = UNK
FILE_RECORDS                     = UNK
^TABLE                           = "MOLA.TAB"

INSTRUMENT_HOST_NAME             = "MARS GLOBAL SURVEYOR"
TARGET_NAME                      = "MARS"
INSTRUMENT_NAME                  = "MARS ORBITER LASER ALTIMETER"
PRODUCER_FULL_NAME               = "DAVID E. SMITH"
PRODUCER_INSTITUTION_NAME        = "NASA/GODDARD SPACE FLIGHT CENTER"
PRODUCER_ID                      = "MGS MOLA TEAM"
SOFTWARE_NAME                    = "PRECISION ORBIT PROFILE PROCESSOR"

DESCRIPTION                      = "This label describes the objects
output in ASCII table format by the program PEDR2TAB. The tables
contain MOLA topography, location, and instrument data in a
space-delimited, customizeable format with names in a two-line
heading.  The information in these files is obtained from the binary
PEDR tables. The corresponding PEDR name is listed in parentheses. The
binary tables contain additional engineering data. The format of the
tables is controlled by the file PEDR2TAB.PRM, allowing the user to
select subsets of PEDRs by latitude, longitude, and shot
classification code. The user may select any of eight groups of values
to be output on a single line per shot, terminated by
machine-dependent delimiters. Note that for this label to be valid for
a given output file, it must be modified to reflect the user's selections
in the PEDR2TAB.PRM file."

OBJECT               = TABLE0
ROWS                 = UNK
COLUMNS              = 7
ROW_BYTES            = 56
INTERCHANGE_FORMAT   = ASCII
DESCRIPTION          = "Ground location, equipotential 
topography, one-way range, planetary radius, trigger channel, and
attitude obtained."

OBJECT               = COLUMN
 NAME                = "LONG_EAST"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 1
 BYTES               = 9
 FORMAT              = "F9.5"
 UNIT                = "DEGREE"
 DESCRIPTION         = "The areocentric East longitude, IAU1991, of the
 intersection point between the MOLA shot and the Mars surface."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "LAT_NORTH"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 10
 BYTES               = 10
 FORMAT              = "F10.5"
 UNIT                = "DEGREE"
 DESCRIPTION         = "The areocentric latitude, IAU1991, of the intersection
  point between the MOLA shot and the Mars surface."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "TOPOGRAPHY"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 20
 BYTES               = 11
 FORMAT              = "F11.2"
 UNIT                = "METER"
 DESCRIPTION         = "The planetary radius (PLANET_RAD) minus the areoid
  radius (AREOID_RAD).  The equipotential topography at the shot location."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "MOLA_RANGE"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 31
 BYTES               = 10
 FORMAT              = "F10.2"
 UNIT                = "METER"
 DESCRIPTION         = "MOLA one-way shot range; the calibrated laser shot
  time-of-flight times the speed of light, divided by two, plus a range walk
  correction from the receiver model (RCORR)."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "PLANET_RAD (SHOT_PLANETARY_RADIUS)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 41
 BYTES               = 12
 FORMAT              = "F12.2"
 UNIT                = "METER"
 DESCRIPTION         = "The distance from the center of Mars to the point on
  the surface of Mars described by the MOLA range."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
NAME                 = "TRIGGER_CHANNEL_NUMBER"
 DATA_TYPE           = ASCII_INTEGER
 START_BYTE          = 53
 BYTES               = 2
 FORMAT              = "I2"
 DESCRIPTION         = "Channel number of first MOLA channel to trigger."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "ATTITUDE_FLAG"
 DATA_TYPE           = ASCII_INTEGER
 START_BYTE          = 55
 BYTES               = 2
 FORMAT              = "I2"
 DESCRIPTION         = "Flag (normally 0) indicating spacecraft attitude data
   was not available for all (3) or part (2) of a MOLA frame, in which case
   shot parameters are calculated assuming nadir-pointing geometry."
END_OBJECT           = COLUMN
END_OBJECT           = TABLE0

OBJECT               = TABLE1
ROWS                 = UNK
COLUMNS              = 3
ROW_BYTES            = 32
INTERCHANGE_FORMAT   = ASCII
DESCRIPTION          = "Spacecraft ground-track location and radial distance."

OBJECT               = COLUMN
 NAME                = "SC_LAT"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 1
 BYTES               = 10
 FORMAT              = "F10.5"
 UNIT                = "DEGREE"
 DESCRIPTION         = "The areocentric latitude, IAU1991, of
  the Mars Global Surveyor spacecraft at MOLA transmit time."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "SC_LONG"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 11
 BYTES               = 10
 FORMAT              = "F10.5"
 UNIT                = "DEGREE"
 DESCRIPTION         = "The East longitude, IAU1991, of the Mars Global
  Surveyor spacecraft at MOLA transmit time."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "SC_RADIUS"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 21
 BYTES               = 12
 FORMAT              = "F12.2"
 UNIT                = "METER"
 DESCRIPTION         = "The distance from the Mars body center to the
  Mars Global Surveyor spacecraft center of mass associated with the MOLA
  frame mid-point, based on a coordinate system with origin at the center
  of mass of Mars. Obtained from the MOLA Science Investigation Team
  precision orbit data."
END_OBJECT           = COLUMN
END_OBJECT           = TABLE1

OBJECT               = TABLE2
ROWS                 = UNK
COLUMNS              = 3
ROW_BYTES            = 44
INTERCHANGE_FORMAT   = ASCII
DESCRIPTION          = "Pointing, transmit time, areodetic latitude, 
 areoid radius."
OBJECT               = COLUMN
 NAME                = "OFFNDR (OFF_NADIR_ANGLE)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 1
 BYTES               = 7
 FORMAT              = "F7.3"
 UNIT                = "DEGREE"
 DESCRIPTION         = "Angle at the spacecraft between the transmitted laser
  shot direction and areocentric direction, at the frame mid-point."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "EPHEMERIS_TIME"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 8
 BYTES               = 16
 FORMAT              = "F16.5"
 UNIT                = "SECOND"
 DESCRIPTION         = "The MOLA shot transmit time referenced
  to J2000 in Elapsed Time seconds -- may be a negative number. The time
  is obtained from the Payload Data System broadcast time and the MOLA fine
  time counter via interpolation."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "AREOD_LAT"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 24
 BYTES               = 10
 FORMAT              = "F10.5"
 UNIT                = "DEGREE"
 DESCRIPTION         = "The areodetic latitude of the ground point with 
  respect to an ellipsoid used in the archived PDS Viking Orbiter Mosaicked 
  Digital Image Map (MDIM), whose flattening is approximately 1/192. The
  MDIMs were not as well controlled as the MOLA coordinates herein. This 
  value is for comparison only. The MDIMS use longitudes that are positive
  West, with a different reference system. MOLA uses an areocentric 
  coordinate system, for which latitude is unrelated to flattening, and 
  longitude is positive East."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "AREOID_RAD (AREOID RADIUS)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 34
 BYTES               = 11
 FORMAT              = "F11.2"
 UNIT                = "METER"
 DESCRIPTION         = "The radius of the reference
 areoid with a 3396 km mean equatorial radius."
END_OBJECT           = COLUMN
END_OBJECT           = TABLE2

OBJECT               = TABLE3
ROWS                 = UNK
COLUMNS              = 3
ROW_BYTES            = 15
INTERCHANGE_FORMAT   = ASCII
DESCRIPTION          = "Shot number in packet, packet, orbit."

OBJECT               = COLUMN
 NAME                = "SHOT"
 DATA_TYPE           = ASCII_INTEGER
 START_BYTE          = 1
 BYTES               = 4
 FORMAT              = "I4"
 DESCRIPTION         = "Shot number (1-140) within a 14-second data packet."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "PKT"
 DATA_TYPE           = ASCII_INTEGER
 START_BYTE          = 5
 BYTES               = 6
 FORMAT              = "I6"
 DESCRIPTION         = "The packet sequence number generated by MOLA,
 incremented sequentially from 0 after an instrument restart."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "ORBIT"
 DATA_TYPE           = ASCII_INTEGER
 START_BYTE          = 11
 BYTES               = 6
 FORMAT              = "I6"
 DESCRIPTION         = "Mission orbit number, determined by Mars
  Global Surveyor flight operations system."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "MGM (ORBIT_QUALITY_FLAG)"
 DATA_TYPE           = ASCII_INTEGER
 START_BYTE          = 17
 BYTES               = 3
 FORMAT              = "I3"
 DESCRIPTION         = "Mars gravity model number, where GMM1.2 is 2,
   GMM1.3 is 3, etc."
END_OBJECT           = COLUMN
END_OBJECT           = TABLE3

OBJECT               = TABLE4
ROWS                 = UNK
COLUMNS              = 3
ROW_BYTES            = 21
INTERCHANGE_FORMAT   = ASCII
DESCRIPTION          = "Local time, solar phase, incidence."

OBJECT               = COLUMN
 NAME                = "LOCAL_TIME"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 1
 BYTES               = 7
 FORMAT              = "F7.3"
 UNIT                = "HOUR"
 DESCRIPTION         = "The local solar time on Mars at the frame
  mid-point ground location, in hours from 0 to 24."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "S_PHAS (SOLAR_PHASE_ANGLE)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 8
 BYTES               = 7
 FORMAT              = "F7.2"
 UNIT                = "DEGREE"
 DESCRIPTION         = "The angle between the vectors from Mars to Mars
  Global Surveyor and from Mars to the Sun at the frame mid-point
  location."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "S_INC (SOLAR_INCIDENCE_ANGLE)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 15
 BYTES               = 7
 FORMAT              = "F7.2"
 UNIT                = "DEGREE"
 DESCRIPTION         = "The angle between the Mars surface normal vector
  and the Sun vector at the frame mid-point location."
END_OBJECT           = COLUMN
END_OBJECT           = TABLE4

OBJECT               = TABLE5
ROWS                 = UNK
COLUMNS              = 7
ROW_BYTES            = 44
INTERCHANGE_FORMAT   = ASCII
DESCRIPTION          = "Emission angle, range correction, pulse widths, 
 energies, and the combined reflectivity-atmospheric transmittance."


OBJECT               = COLUMN
 NAME                = "EMISSN (EMISSION_ANGLE)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 1
 BYTES               = 7
 FORMAT              = "F7.2"
 UNIT                = "DEGREE"
 DESCRIPTION         = "The angle between the Mars surface normal vector and
  a vector to Mars Global Surveyor at the frame mid-point ground location."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "RCORR (RANGE_CORRECTION)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 8
 BYTES               = 7
 FORMAT              = "F7.2"
 UNIT                = "METER"
 DESCRIPTION         = "Correction to the shot range due to the
  detector response and range walk, from the receiver model. For comparison,
  the uncorrected topography equals TOPOGRAPHY + RCORR * COS(EMISSN)."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "PWT (PULSE_WIDTH)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 15
 BYTES               = 8
 FORMAT              = "F8.1"
 UNIT                = "NANOSECOND"
 DESCRIPTION         = "The time between threshold crossings of the detected
  pulse. Saturation of energy detector may result in invalid data (see
  RECV_PULSE_ENERGY_COUNTS)."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "SIGOPT (RECV_OPTICAL_PULSE_WIDTH)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 23
 BYTES               = 8
 FORMAT              = "F8.1"
 UNIT                = "NANOSECOND"
 DESCRIPTION         = "Received optical pulse width, one sigma, corrected for
  filter characteristics and threshold settings, as determined by the
  receiver model. The pulse width provides an estimate of target slope and/or
  roughness, assuming linear detector response and nadir-looking geometry."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "E_LASER (LASER_TRANSMIT_POWER)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 31
 BYTES               = 7
 FORMAT              = "F7.2"
 UNIT                = "MILLIJOULE"
 DESCRIPTION         = "MOLA laser transmitted pulse energy."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "PULSE_E (CORR_RECV_PULSE_ENRGY)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 38
 BYTES               = 7
 FORMAT              = "F7.0"
 UNIT                = "ATTOJOULE"
 DESCRIPTION         = "Corrected surface-scattered return energy
  measured by first MOLA channel to trigger. Saturation of energy detector may
  result in invalid data (see RECV_PULSE_ENERGY_COUNTS)."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "REF*T% (SURF_REFLECTIVITY)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 45
 BYTES               = 7
 FORMAT              = "F7.3"
 UNIT                = "PERCENT"
 DESCRIPTION         = "Martian surface reflectivity times two-way atmospheric
 transmittance at 1064 nm wavelength from the link equation, in percent."
END_OBJECT           = COLUMN
END_OBJECT           = TABLE5

OBJECT               = TABLE6
ROWS                 = UNK
COLUMNS              = 4
ROW_BYTES            = 21
INTERCHANGE_FORMAT   = ASCII
DESCRIPTION          = "Background, threshold, pulse counts."

OBJECT               = COLUMN
 NAME                = "BKGRD (CHANNEL_BACKGROUND_NOISE_CTS)"
 DATA_TYPE           = ASCII_INTEGER
 START_BYTE          = 1
 BYTES               = 7
 FORMAT              = "I7"
 UNIT                = "COUNT"
 DESCRIPTION         = "Background noise levels in the MOLA channels at
  half-frame rate for the trigger channel. A crude radiometer at 1064 nm."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "TH_MV (CHANNEL_THRESHOLD_SETTING)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 8
 BYTES               = 7
 FORMAT              = "F7.1"
 UNIT                = "MILLIVOLT"
 DESCRIPTION         = "Threshold setting for the MOLA trigger channel at the
  threshold detector."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "WCT (RECV_PULSE_WIDTH_COUNTS)"
 DATA_TYPE           = ASCII_INTEGER
 START_BYTE          = 15
 BYTES               = 3
 FORMAT              = "I3"
 UNIT                = "COUNT"
 DESCRIPTION         = "The raw pulse width reading; in the range 0-63."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "ECT (RECV_PULSE_ENERGY_COUNTS)"
 DATA_TYPE           = ASCII_INTEGER
 START_BYTE          = 18
 BYTES               = 4
 FORMAT              = "I4"
 UNIT                = "COUNT"
 DESCRIPTION         = "The raw pulse energy reading; in the range 0-255."
END_OBJECT           = COLUMN
END_OBJECT           = TABLE6

OBJECT               = TABLE7
ROWS                 = UNK
COLUMNS              = 2
ROW_BYTES            = 15
INTERCHANGE_FORMAT   = ASCII
DESCRIPTION          = "Range gate window width and delay."

OBJECT               = COLUMN
 NAME                = "R_WND (RANGE_WIDTH)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 1
 BYTES               = 7
 FORMAT              = "F7.0"
 UNIT                = "METER"
 DESCRIPTION         = "Frame value of range gate width (trigger window)."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
 NAME                = "R_DLY (RANGE_DELAY)"
 DATA_TYPE           = ASCII_REAL
 START_BYTE          = 8
 BYTES               = 8
 FORMAT              = "F8.0"
 UNIT                = "METER"
 DESCRIPTION         = "Frame value of range gate delay to beginning of
  range trigger window."
END_OBJECT           = COLUMN
END_OBJECT           = TABLE7
END