PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM

OBJECT                = TEXT
   INTERCHANGE_FORMAT = ASCII
   PUBLICATION_DATE   = 2019-06-01
   NOTE               = "Explanation of labels for RS experiments using USO
                         instrument onboard Venus Climate Orbiter (VCO, also
                         known as PLANET-C and AKATSUKI) data files."
END_OBJECT            = TEXT

END

Example label for ASCII text table file
=======================================
  
  PDS_VERSION_ID               = PDS3
  DD_VERSION_ID                = PDSCAT1R103
  
  
  /* ---- FILE CHARACTERISTICS ---- */
  
  FILE_NAME                    = "rs_20160303_223100_udsc64_l2_v10.tab"
  FILE_RECORDS                 = 65917
  RECORD_TYPE                  = FIXED_LENGTH
  RECORD_BYTES                 = 276
  
  
  /* ---- POINTERS TO DATA OBJECTS ---- */
  
  ^DOPPLER_TABLE               = "rs_20160303_223100_udsc64_l2_v10.tab"
  
  
  /* ---- IDENTIFICATION DATA ELEMENTS ---- */
  
  MISSION_NAME                 = "VENUS CLIMATE ORBITER"
  MISSION_ALIAS_NAME           = {"PLANET-C", "AKATSUKI"}
  MISSION_ID                   = "VCO"
  DATA_SET_ID                  = "VCO-V-RS-3-OCC-V1.0"
  PRODUCT_ID                   = "RS_20160303_223100_UDSC64_L2_V10.TAB"
  PRODUCT_TYPE                 = "OCCULTATION"
  PRODUCT_CREATION_TIME        = 2018-09-28T00:56:38.711
  INSTRUMENT_HOST_NAME         = "VENUS CLIMATE ORBITER"
  INSTRUMENT_HOST_ID           = "VCO"
  INSTRUMENT_NAME              = "RADIO SCIENCE"
  INSTRUMENT_ID                = "RS"
  PRODUCER_ID                  = "VCO/RS TEAM"
  INSTITUTION_NAME             = "ISAS/JAXA"
  SOURCE_PRODUCT_ID            = {
                                  "U063223100A.DAT",
                                  "U063223100A.DAT1",
                                  "U063223100A.DAT2",
                                  "U063223100A.DAT3",
                                  "U063223100A.DAT4",
                                  "U063223100A.DAT5",
                                  "U063223100A.DAT6",
                                  "U063223100A.DAT7",
                                  "U063223100A.DAT8"
                                 }
  MISSION_PHASE_NAME           = "PRIMARY SCIENCE PHASE"
  
  
  /* TIME INFORMATION */
  
  START_TIME                   = 2016-03-03T22:31:00.059
  OBSERVATION_TIME             = 2016-03-03T23:06:59.995
  STOP_TIME                    = 2016-03-03T23:42:59.930
  START_JULIAN_DATE_VALUE      = 2457451.4381951275
  MID_JULIAN_DATE_VALUE        = 2457451.463194381
  STOP_JULIAN_DATE_VALUE       = 2457451.4881936344
  SPACECRAFT_CLOCK_START_COUNT = "2/1586683192"
  SPACECRAFT_CLOCK_STOP_COUNT  = "2/1586821427"
  
  
  /* TARGET INFORMATION */
  
  TARGET_NAME                  = VENUS
  VCO:SPHERICAL_RADIUS         = 6051.8 <km>
  
  
  /* ---- DESCRIPTIVE DATA ELEMENTS ---- */
  
  /* INSTRUMENTAL INFORMATION AND ITS CONDITION */
  
  OBSERVATION_TYPE             = "OCCULTATION"
  VCO:GROUND_STATION           = "UDSC64"
  
  
  /* ORBIT INFORMATION */
  
  ORBIT_NUMBER                 = 9
  PERIAPSIS_TIME               = 2016-03-03T21:19:03
  PERIAPSIS_LONGITUDE          = 9.27 <deg>
  PERIAPSIS_LATITUDE           = 4.22 <deg>
  PERIAPSIS_ALTITUDE           = 5478.3 <km>
  ORBITAL_INCLINATION          = 169.29 <deg>
  VCO:ORBITAL_ECCENTRICITY     = 0.939
  ASCENDING_NODE_LONGITUDE     = 216.97 <deg>
  PERIAPSIS_ARGUMENT_ANGLE     = 156.68 <deg>
  ORBITAL_SEMIMAJOR_AXIS       = 188775.21 <km>
  
  
  /* OTHERS */
  
  DESCRIPTION                  = "
      This table contains Doppler and signal intensity measurements made by
      Venus Climate Orbiter (VCO, also known as PLANET-C and AKATSUKI), X-band
      radio occultation observations.
    "
  NOTE                         = "
      The egress profile might suffer from the effect of a large latitudinal
      movement of the ray path.
    "
  
  
  /* ---- DATA OBJECTS DEFINITIONS ---- */
  
  OBJECT                       = DOPPLER_TABLE
  
    NAME                       = DOPPLER_DATA
    INTERCHANGE_FORMAT         = ASCII
    ROW_BYTES                  = 276
    ROWS                       = 65917
    COLUMNS                    = 17
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 1
      NAME                     = SAMPLE_NUMBER
      DATA_TYPE                = ASCII_INTEGER
      START_BYTE               = 1
      BYTES                    = 5
      FORMAT                   = "I5"
      UNIT                     = "N/A"
      VALID_MINIMUM            = 1
      DESCRIPTION              = "
          The number of this row in the table, starting from 1 in the first
          row.
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 2
      NAME                     = UTC_TIME
      DATA_TYPE                = TIME
      START_BYTE               = 8
      BYTES                    = 23
      FORMAT                   = "A23"
      UNIT                     = "N/A"
      DESCRIPTION              = "
          The UTC receiver date and time of this measurement, in the format
          YYYY-MM-DDThh:mm:ss.SSS.
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 3
      NAME                     = DAY_OF_YEAR_WITH_FRACTIONS
      DATA_TYPE                = ASCII_REAL
      START_BYTE               = 33
      BYTES                    = 14
      FORMAT                   = "F14.10"
      UNIT                     = "DAY"
      VALID_MAXIMUM            = 368.0
      VALID_MINIMUM            = 1.0
      DESCRIPTION              = "
          The day-of-year (and fraction) corresponding to UTC_TIME (column 2)
          where 1.0000000000 is at 0h on 1st January of the current year.
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 4
      NAME                     = EPHEMERIS_SECONDS
      DATA_TYPE                = ASCII_REAL
      START_BYTE               = 49
      BYTES                    = 16
      FORMAT                   = "F16.6"
      UNIT                     = "SECOND"
      DESCRIPTION              = "
          Seconds from 12h 1st January 2000 TDB (J2000.0) corresponding to
          UTC_TIME (column 2); includes leap seconds, if any.
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 5
      NAME                     = DISTANCE
      DATA_TYPE                = ASCII_REAL
      START_BYTE               = 67
      BYTES                    = 15
      FORMAT                   = "F15.6"
      UNIT                     = "KILOMETER"
      VALID_MINIMUM            = 0.0
      DESCRIPTION              = "
          The impact parameter of the downlink geometric ray with respect to
          Venus for the photon received at the UTC_TIME (column 2) in the
          absence of Venus atmosphere.
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 6
      NAME                     = TRANSMIT_FREQUENCY_RAMP_REFERENCE_TIME
      DATA_TYPE                = TIME
      START_BYTE               = 84
      BYTES                    = 23
      FORMAT                   = "A23"
      UNIT                     = "N/A"
      DESCRIPTION              = "
          The time (t_0) at which the transmitted frequency would have been
          f_0 using the coefficients f_0 (`TRANSMIT FREQUENCY - CONSTANT TERM'
          in column 7) and df (`TRANSMIT FREQUENCY - LINEAR TERM' in column
          8). At any time t within the interval when those coefficients are
          valid, the transmitted frequency f_t may be calculated from
  
             f_t     = f_0 + df*(t-t_0)
  
          The format is YYYY-MM-DDThh:mm:ss.SSS.
  
          If the transmit time is not known or is irrelevant, the value
          0000-00-00T00:00:00.000 may appear.
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 7
      NAME                     = "TRANSMIT FREQUENCY - CONSTANT TERM"
      START_BYTE               = 109
      BYTES                    = 17
      DATA_TYPE                = ASCII_REAL
      FORMAT                   = "F17.6"
      UNIT                     = "HERTZ"
      VALID_MINIMUM            = 0.0
      INVALID_CONSTANT         = -999999999.999999
      DESCRIPTION              = "
          The initial frequency f_0 of the transmit frequency ramp (at t_0).
          See DESCRIPTION of TRANSMIT_FREQUENCY_RAMP_REFERENCE_TIME (column
          6).
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 8
      NAME                     = "TRANSMIT FREQUENCY - LINEAR TERM"
      START_BYTE               = 128
      BYTES                    = 13
      DATA_TYPE                = ASCII_REAL
      FORMAT                   = "F13.6"
      UNIT                     = "HERTZ PER SECOND"
      VALID_MINIMUM            = 0.0
      INVALID_CONSTANT         = -99999.999999
      DESCRIPTION              = "
          The time derivative (df) of the transmitted frequency during the
          interval beginning at t_0. See DESCRIPTION of
          TRANSMIT_FREQUENCY_RAMP_REFERENCE_TIME (column 6).
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 9
      NAME                     = "OBSERVED X-BAND ANTENNA FREQUENCY"
      START_BYTE               = 143
      BYTES                    = 17
      DATA_TYPE                = ASCII_REAL
      FORMAT                   = "F17.6"
      UNIT                     = "HERTZ"
      INVALID_CONSTANT         = -999999999.999999
      DESCRIPTION              = "
          Frequency of the signal at the receiving antenna at UTC_TIME
          (column 2).
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 10
      NAME                     = "PREDICTED X-BAND ANTENNA FREQUENCY"
      START_BYTE               = 162
      BYTES                    = 17
      DATA_TYPE                = ASCII_REAL
      FORMAT                   = "F17.6"
      UNIT                     = "HERTZ"
      DESCRIPTION              = "
          Expected frequency of the signal at the receiving antenna at
          UTC_TIME (column 2) based on the JAXA reconstructed SPKs. The
          calculation includes geometrical effects (relative positions and
          motions of ground station and spacecraft, including the Earth
          rotation and light time adjustments). Correction for propagation
          through the Earth's neutral atmosphere is not made.
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 11
      NAME                     = CORRECTION_OF_EARTH_ATMOSPHERE_PROPAGATION
      START_BYTE               = 181
      BYTES                    = 9
      DATA_TYPE                = ASCII_REAL
      FORMAT                   = "F9.6"
      UNIT                     = "HERTZ"
      INVALID_CONSTANT         = -9.999999
      DESCRIPTION              = "
          Frequency correction term for the propagation of the signal in the
          Earth atmosphere.
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 12
      NAME                     = "RESIDUAL CALIBRATED X-BAND FREQUENCY SHIFT"
      START_BYTE               = 192
      BYTES                    = 15
      DATA_TYPE                = ASCII_REAL
      UNIT                     = "HERTZ"
      FORMAT                   = "F15.6"
      DESCRIPTION              = "
          Value of `OBSERVED X-BAND ANTENNA FREQUENCY' (column 9) minus
          value of `PREDICTED X-BAND ANTENNA FREQUENCY' (column 10).
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 13
      NAME                     = "SIGNAL LEVEL X-BAND"
      START_BYTE               = 209
      BYTES                    = 11
      DATA_TYPE                = ASCII_REAL
      FORMAT                   = "E11.4"
      UNIT                     = "N/A"
      INVALID_CONSTANT         = -0.9999E+01
      DESCRIPTION              = "
          Signal level in arbitrary linear unit with the effect of inaccurate
          antenna pointing corrected (relative unit).
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 14
      NAME                     = DIFFERENTIAL_DOPPLER
      START_BYTE               = 222
      BYTES                    = 17
      DATA_TYPE                = ASCII_REAL
      FORMAT                   = "F17.6"
      UNIT                     = "HERTZ"
      INVALID_CONSTANT         = -999.999999
      DESCRIPTION              = "
          Contribution of dispersive media to the received signal frequency
          calculated from two coherent bands.
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 15
      NAME                     = "SIGMA OBSERVED X-BAND ANTENNA FREQUENCY"
      START_BYTE               = 241
      BYTES                    = 13
      DATA_TYPE                = ASCII_REAL
      FORMAT                   = "F13.6"
      UNIT                     = "HERTZ"
      INVALID_CONSTANT         = -99999.999999
      DESCRIPTION              = "
          A statistical measure of the error in determining `OBSERVED X-BAND
          ANTENNA FREQUENCY' (column 9).
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 16
      NAME                     = "SIGNAL QUALITY X-BAND"
      START_BYTE               = 256
      BYTES                    = 6
      DATA_TYPE                = ASCII_REAL
      FORMAT                   = "F6.1"
      UNIT                     = "DECIBEL"
      INVALID_CONSTANT         = -999.9
      DESCRIPTION              = "
          Ratio of observed received signal strength to the statistical
          standard deviation of the measurement.
        "
    END_OBJECT                 = COLUMN
  
    OBJECT                     = COLUMN
      COLUMN_NUMBER            = 17
      NAME                     = "SIGMA SIGNAL LEVEL X-BAND"
      START_BYTE               = 264
      BYTES                    = 11
      DATA_TYPE                = ASCII_REAL
      FORMAT                   = "E11.4"
      UNIT                     = "N/A"
      INVALID_CONSTANT         = -0.9999E+01
      DESCRIPTION              = "
          A statistical measure of the error in determining `SIGNAL LEVEL
          X-BAND' (column 13).
        "
    END_OBJECT                 = COLUMN
  
  END_OBJECT                   = DOPPLER_TABLE
  
  END


General notes regarding label
=============================

  * Strings appear in quotes.
  * Integers and PDS Times do not take quotes.
  * Unordered lists are enclosed within {} type brackets.
  * Ordered lists are enclosed within () type brackets.
  * If a field is unknown, "UNK" may be entered.
  * If this field is not applicable to this file, "N/A" can be used.
  * Fields can spill freely, with or without white space, onto following
    lines.


Definition of Keywords/Values for FITS files:
=============================================

  PDS_VERSION_ID                The version of the present PDS standards
                                document PDS3.

  DD_VERSION_ID                 The version of the PDS data dictionary.

  FILE_NAME                     Actual file name.

  FILE_RECORDS                  The number of physical file records.

  RECORD_TYPE                   Record format of the file, For files with
                                fixed-length records, FIXED_LENGTH, for text
                                files, STREAM.

  RECORD_BYTES                  Record length in the case of fixed-length
                                records, an integer (no quotation marks)
                                If records have variable length, "N/A".

  ^DOPPLER_TABLE                Pointer to object for Radio Science data
                                table file to which this label applies.

  MISSION_NAME                  VENUS CLIMATE ORBITER.

  MISSION_ALIAS_NAME            PLANET-C and AKATSUKI.

  MISSION_ID                    VCO.

  DATA_SET_ID                   Has form: "VCO-V-RS-3-OCC-V1.0" where 'VCO'
                                is for data for the Venus Climate Orbiter
                                spacecraft; 'V' is for the Venus, the mission
                                target; 'RS' is identifier of the experiment;
                                '3' is the CODMAC processing level; 'OCC' is
                                the data set type for Occultation Data;
                                V1.0 is the data set version number.

  PRODUCT_ID                    Actual file name in upper-case.

  PRODUCT_TYPE                  OCCULTATION.

  PRODUCT_CREATION_TIME         Time file was created. This follows
                                PDS time structure: yyyy-mm-ddThh:mm:ss.ttt
                                No quotes are needed.

  INSTRUMENT_HOST_NAME          VENUS CLIMATE ORBITER.

  INSTRUMENT_HOST_ID            VCO.

  INSTRUMENT_NAME               RADIO SCIENCE, the experiment name.

  INSTRUMENT_ID                 RS.

  PRODUCER_ID                   "VCO/RS TEAM", institutions or team and/or
                                individual who made the file.

  INSTITUTION_NAME              ISAS/JAXA.

  SOURCE_PRODUCT_ID             source data list in upper case.

  MISSION_PHASE_NAME            Name of the mission phase.

  START_TIME                    Data start time. This follows the PDS Time
                                format is yyyy-mm-ddThh:mm:ss.ttt.
                                No quotes are needed. For files not covering
                                a specific time interval, "N/A".

  OBSERVATION_TIME              Data middle time that indicates representative
                                time of the observation. This follows the PDS
                                Time format is yyyy-mm-ddThh:mm:ss.ttt. No
                                quotes are needed. For files not covering a
                                specific time interval, "N/A".

  STOP_TIME                     Data stop time. This follows the PDS
                                Time format is yyyy-mm-ddThh:mm:ss.ttt.

  START_JULIAN_DATE_VALUE       Full Julian date of the start of an
                                observation corresponding to a value of
                                START_TIME.

  MID_JULIAN_DATE_VALUE         Full Julian date of the middle of an
                                observation corresponding to a value of
                                OBSERVATION_TIME.

  STOP_JULIAN_DATE_VALUE        Full Julian date of the stop of an
                                observation corresponding to a value of
                                STOP_TIME.

  TARGET_NAME                   VENUS, the mission target.

  VCO:SPHERICAL_RADIUS          The spherical radius of the target planet.

  OBSERVATION_TYPE              OCCULTATION.

  VCO:GROUND_STATION            Abbreviation of ground station used to acquire
                                data.

  ORBIT_NUMBER                  The number of the orbital revolution of the
                                spacecraft around a target body, Venus. This
                                value is 0 for the cruise phase, and become 1
                                just after the Venus orbit insertion, and
                                increments when the spacecraft passing
                                periapsis.

  PERIAPSIS_TIME                Time when the spacecraft passing periapsis.

  PERIAPSIS_LONGITUDE           Sub-spacecraft longitude when the spacecraft
                                passing periapsis.

  PERIAPSIS_LATITUDE            Sub-spacecraft latitude when the spacecraft
                                passing periapsis.

  PERIAPSIS_ALTITUDE            Sub-spacecraft altitude measured from ground
                                of the target planet when the spacecraft
                                passing periapsis.

  ORBITAL_INCLINATION           Orbital inclination of the orbit.

  VCO:ORBITAL_ECCENTRICITY      Orbital eccentricity of the orbit.

  ASCENDING_NODE_LONGITUDE      Ascending node longitude of the orbit.

  PERIAPSIS_ARGUMENT_ANGLE      Argument angle at the periapsis.

  ORBITAL_SEMIMAJOR_AXIS        Length of semimajor axis of the orbit.

  DESCRIPTION                   General description of the data file.

  NOTE                          The data-file-specific note.

  OBJECT                        DOPPLER_TABLE.

  NAME                          Name of the object, DOPPLER_DATA.

  INTERCHANGE_FORMAT            ASCII.

  ROW_BYTES                     Number of bytes in each row.

  ROWS                          Number of rows in the file.

  COLUMNS                       Number of columns in the file.

  OBJECT (in DOPPLER_TABLE)     COLUMN.

  COLUMN_NUMBER                 Column number.

  DATA_TYPE                     Type of the data.

  START_BYTE                    Start byte from beginning of the line for
                                this column object.

  BYTES                         Number of bytes in this column object.

  FORMAT                        Fortran format identifier to read this column.

  UNIT                          The full name or standard abbreviation of a
                                unit of measurement in which a value is
                                expressed.

  VALID_MAXIMUM                 valid, maximum value for this column.

  VALID_MINIMUM                 valid, minimum value for this column.

  DESCRIPTION                   Brief description of this OBJECT.

  INVALID_CONSTANT              Invalid constant flag value for this column.

  END_OBJECT (in DOPPLER_TABLE) COLUMN.

  END_OBJECT                    DOPPLER_TABLE.

  END                           End of the PDS Label.
