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 /* ---- 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 PERIAPSIS_LATITUDE = 4.22 PERIAPSIS_ALTITUDE = 5478.3 ORBITAL_INCLINATION = 169.29 VCO:ORBITAL_ECCENTRICITY = 0.939 ASCENDING_NODE_LONGITUDE = 216.97 PERIAPSIS_ARGUMENT_ANGLE = 156.68 ORBITAL_SEMIMAJOR_AXIS = 188775.21 /* 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.