PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 36 FILE_RECORDS = 896 DATA_SET_ID = "DAWN-A-RSS-1-VEGR-V1.0" TARGET_NAME = "4 VESTA" INSTRUMENT_HOST_NAME = "DAWN" INSTRUMENT_NAME = "GRAVITY SCIENCE INSTRUMENT" INSTRUMENT_ID = "RSS" PRODUCER_ID = "DSN" MISSION_NAME = "DAWN MISSION TO VESTA AND CERES" OBSERVATION_TYPE = "SCIENCE" DSN_STATION_NUMBER = 26 PRODUCT_CREATION_TIME = 2012-02-06T22:03:39.000 PRODUCT_ID = "DAWNVEGR2012_037_1017XMMMV1.ODF" ORIGINAL_PRODUCT_ID = "DAWNVEGR2012_037_1017XMMMV1.ODF" START_TIME = 2012-037T10:17:08 STOP_TIME = 2012-037T21:58:54 HARDWARE_MODEL_ID = "RDCA" SOFTWARE_NAME = "RKMERGEO" DESCRIPTION = "Orbit Data Files (ODFs) are produced by the NASA/JPL Multi-Mission Navigation Radio Metric Data Conditioning Team for use in determining spacecraft trajectories, gravity fields affecting them, and radio propagation conditions. Each ODF consists of many 36-byte logical records, which fall into 7 primary groups plus an End-of-File Group. An ODF usually contains most groups, but may not have all. The first record in each of the 7 primary groups is a header record; depending on the group, there may be from zero to many data records following each header. The ODF is described in JPL/DSN Document 820-13, TRK-2-18 (various versions, with significant changes in April 1997). The latest version is included in this archive as T2-18-L5.LBL in the DOCUMENT directory." ^ODF1A_TABLE = ("DAWNVEGR2012_037_1017XMMMV1.ODF",1) ^ODF1B_TABLE = ("DAWNVEGR2012_037_1017XMMMV1.ODF",2) ^ODF2A_TABLE = ("DAWNVEGR2012_037_1017XMMMV1.ODF",3) ^ODF2B_TABLE = ("DAWNVEGR2012_037_1017XMMMV1.ODF",4) ^ODF3A_TABLE = ("DAWNVEGR2012_037_1017XMMMV1.ODF",5) ^ODF3C_TABLE = ("DAWNVEGR2012_037_1017XMMMV1.ODF",6) ^ODF4A26_TABLE = ("DAWNVEGR2012_037_1017XMMMV1.ODF",696) ^ODF4B26_TABLE = ("DAWNVEGR2012_037_1017XMMMV1.ODF",697) ^ODF8A_TABLE = ("DAWNVEGR2012_037_1017XMMMV1.ODF",791) ^ODF8B_TABLE = ("DAWNVEGR2012_037_1017XMMMV1.ODF",792) OBJECT = ODF1A_TABLE NAME = "FILE LABEL GROUP HEADER" INTERCHANGE_FORMAT = BINARY ROWS = 1 COLUMNS = 4 ROW_BYTES = 16 ROW_SUFFIX_BYTES = 20 DESCRIPTION = "The File Label Group is usually the first of several groups of records in an Orbit Data File (ODF). It identifies the spacecraft, the file creation time, the hardware, and the software associated with the ODF. The File Label Group Header is the first record in the File Label Group. It is one 36-byte record and is followed by one 36-byte data record. Occasionally, the File Label Group is omitted from an ODF. The row suffix bytes in the File Label Group Header are set to 0." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "PRIMARY KEY" DATA_TYPE = MSB_INTEGER START_BYTE = 1 BYTES = 4 DESCRIPTION = "Item 1: The Primary Key indicates the type of data records to follow. In the File Label Group Header this field is set to 101." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "SECONDARY KEY" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 5 BYTES = 4 DESCRIPTION = "Item 2: The Secondary Key is not used in the ODF. It is set to 0." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "LOGICAL RECORD LENGTH" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 9 BYTES = 4 UNIT = PACKET DESCRIPTION = "Item 3: The Logical Record Length gives the number of 36-byte physical records making up each logical record in a File Label Group data record. For the File Label Group it is set to 1." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "GROUP START PACKET NUMBER" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 13 BYTES = 4 DESCRIPTION = "Item 4: The Group Start Packet Number gives the number of the ODF packet containing the File Label Group Header. Set to 0, since the File Label Group Header, when it appears, is always first." END_OBJECT = COLUMN END_OBJECT = ODF1A_TABLE OBJECT = ODF1B_TABLE NAME = "FILE LABEL GROUP DATA" INTERCHANGE_FORMAT = BINARY ROWS = 1 COLUMNS = 7 ROW_BYTES = 36 DESCRIPTION = "The File Label Group is usually the first of several groups of records in an Orbit Data File (ODF). It identifies the spacecraft, the file creation time, the hardware, and the software associated with the ODF. The File Label Group data record is the second record in the File Label Group. It is one 36-byte record and is preceded by one 36-byte File Label Group header record. Occasionally, the File Label Group is omitted from an ODF." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "SYSTEM ID" DATA_TYPE = CHARACTER START_BYTE = 1 BYTES = 8 DESCRIPTION = "Items 1-8: A character string identifying the hardware on which the ODF was created." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "PROGRAM ID" DATA_TYPE = CHARACTER START_BYTE = 9 BYTES = 8 DESCRIPTION = "Items 9-16: A character string identifying the program under which the ODF was created." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "SPACECRAFT ID" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 17 BYTES = 4 DESCRIPTION = "Item 17: ID number for the spacecraft. These are specified in DSN document OPS-6-8. Representative values include Magellan 18 Voyager 1 31 Voyager 2 32 Clementine 64 Galileo Orbiter 77 Mars Global Surveyor 94" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "FILE CREATION DATE" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 21 BYTES = 4 DESCRIPTION = "Item 18: The date on which the ODF was created, given as a single number of the form YYMMDD. where YY is the two least significant digits of the year MM is the month (01 through 12) DD is the day of month (01 through 31)" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "FILE CREATION TIME" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 25 BYTES = 4 DESCRIPTION = "Item 19: The time at which the ODF was created, given as a single number of the form HHMMSS. where HH is the two-digit hour (00 through 23) MM is the two-digit minute (00 through 59) SS is the two-digit second (00 through 59)" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "FILE REFERENCE DATE" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 29 BYTES = 4 DESCRIPTION = "Item 20: The reference date for ODF time tags -- for example, 19500101 for EME50. Older files which have reference dates of zero will be assumed to be EME50." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "FILE REFERENCE TIME" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 33 BYTES = 4 DESCRIPTION = "Item 21: The reference time for ODF time tags. Set to 000000." END_OBJECT = COLUMN END_OBJECT = ODF1B_TABLE OBJECT = ODF2A_TABLE NAME = "IDENTIFIER GROUP HEADER" INTERCHANGE_FORMAT = BINARY ROWS = 1 COLUMNS = 4 ROW_BYTES = 16 ROW_SUFFIX_BYTES = 20 DESCRIPTION = "The Identifier Group is usually the second of several groups of records in an Orbit Data File (ODF). It is sometimes used to identify contents of data records that follow. The Identifier Group Header is the first record in the Identifier Group. It is one 36-byte record and is followed by one 36-byte Identifier Group data record. Occasionally the Identifier Group is omitted from an ODF. The row suffix bytes in the Identifier Group Header are set to 0." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "PRIMARY KEY" DATA_TYPE = MSB_INTEGER START_BYTE = 1 BYTES = 4 DESCRIPTION = "Item 1: The Primary Key indicates the type of data records to follow. In the Identifier Group Header this field is set to 107." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "SECONDARY KEY" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 5 BYTES = 4 DESCRIPTION = "Item 2: The Secondary Key is not used in the ODF. It is set to 0." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "LOGICAL RECORD LENGTH" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 9 BYTES = 4 UNIT = PACKET DESCRIPTION = "Item 3: The Logical Record Length gives the number of 36-byte physical records making up each logical record in an Identifier Group data record. For the Identifier Group it is set to 1." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "GROUP START PACKET NUMBER" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 13 BYTES = 4 DESCRIPTION = "Item 4: The Group Start Packet Number gives the number of the ODF packet containing the Identifier Group Header. Usually set to 2, since the Identifier Group usually follows the Label Group immediately in the ODF." END_OBJECT = COLUMN END_OBJECT = ODF2A_TABLE OBJECT = ODF2B_TABLE NAME = "IDENTIFIER GROUP DATA" INTERCHANGE_FORMAT = BINARY ROWS = 1 COLUMNS = 3 ROW_BYTES = 36 DESCRIPTION = "The Identifier Group is usually the second of several groups of records in an Orbit Data File (ODF). It is sometimes used to identify contents of data records that follow. The Identifier Group data record is the second record in the Identifier Group. It is one 36-byte record and is preceded by one 36-byte Identifier Group header record. Occasionally the Identifier Group is omitted from an ODF." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "ITEM 1" DATA_TYPE = CHARACTER START_BYTE = 1 BYTES = 8 DESCRIPTION = "Item 1: A character string sometimes used to identify contents of data records to follow. Often the ASCII characters 'TIMETAG' followed by one ASCII 'blank'." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "ITEM 2" DATA_TYPE = CHARACTER START_BYTE = 9 BYTES = 8 DESCRIPTION = "Item 2: A character string sometimes used to identify contents of data records to follow. Often the ASCII characters 'OBSRVBL' followed by one ASCII 'blank'." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "ITEM 3" DATA_TYPE = CHARACTER START_BYTE = 17 BYTES = 20 DESCRIPTION = "Item 3: A character string sometimes used to identify contents of data records to follow. For example, ASCII characters 'OD-SAMPL-ID FRQ RSD '." END_OBJECT = COLUMN END_OBJECT = ODF2B_TABLE OBJECT = ODF3A_TABLE NAME = "ORBIT DATA GROUP HEADER" INTERCHANGE_FORMAT = BINARY ROWS = 1 COLUMNS = 4 ROW_BYTES = 16 ROW_SUFFIX_BYTES = 20 DESCRIPTION = "The Orbit Data Group is usually the third of several groups of records in an Orbit Data File (ODF). It contains the majority of the data included in the file. The Orbit Data Group Header is the first record in the Orbit Data Group; it is usually followed by many Orbit Data Group data records, ordered by time. All records in the Orbit Data Group have 36 bytes. The row suffix bytes in the Orbit Data Group Header are set to 0. This Orbit Data Group follows TRK-2-18, version of 1 August 1996." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "PRIMARY KEY" DATA_TYPE = MSB_INTEGER START_BYTE = 1 BYTES = 4 DESCRIPTION = "Item 1: The Primary Key indicates the type of data records to follow. In the Orbit Data Group Header this field is set to 109." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "SECONDARY KEY" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 5 BYTES = 4 DESCRIPTION = "Item 2: The Secondary Key is not used in the ODF. It is set to 0." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "LOGICAL RECORD LENGTH" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 9 BYTES = 4 UNIT = PACKET DESCRIPTION = "Item 3: The Logical Record Length gives the number of 36-byte physical records making up each logical record in an Orbit Data Group data record. For the Orbit Data Group it is set to 1." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "GROUP START PACKET NUMBER" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 13 BYTES = 4 DESCRIPTION = "Item 4: The Group Start Packet Number gives the number of the ODF packet containing the Orbit Data Group Header. Since the Orbit Data Group usually follows immediately after the File Label Group and the Identifier Group, it is usually set to 4." END_OBJECT = COLUMN END_OBJECT = ODF3A_TABLE OBJECT = ODF3C_TABLE NAME = "ORBIT DATA GROUP DATA" INTERCHANGE_FORMAT = BINARY ROWS = 690 COLUMNS = 6 ROW_BYTES = 36 DESCRIPTION = "The Orbit Data Group is usually the third of several groups of records in an Orbit Data File (ODF). It contains the majority of the data included in the file. The Orbit Data Group Header is the first record in the Orbit Data Group; it is usually followed by many Orbit Data Group data records, ordered by time. All records in the Orbit Data Group have 36 bytes. Their format and content follows the specification in TRK-2-18, version of 1 August 1996." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "TIME TAG - INTEGER PART" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 1 BYTES = 4 UNIT = SECOND DESCRIPTION = "Item 1: The integer part of the record time tag, measured from 0 hours UTC on 1 January 1950. The fractional part of the time tag is in Item 2." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "ITEMS 2-3" DATA_TYPE = MSB_BIT_STRING START_BYTE = 5 BYTES = 4 DESCRIPTION = "Items 2-3 of the ODF." OBJECT = BIT_COLUMN NAME = "TIME TAG - FRACTIONAL PART" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 1 BITS = 10 UNIT = MILLISECOND DESCRIPTION = "Item 2: The fractional part of the record time tag (see Column 1)." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "PRIMARY RECEIVING STATION DOWNLINK DELAY" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 11 BITS = 22 UNIT = NANOSECOND DESCRIPTION = "Item 3: Downlink delay for the primary receiving station." END_OBJECT = BIT_COLUMN END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "OBSERVABLE - INTEGER PART" DATA_TYPE = MSB_INTEGER START_BYTE = 9 BYTES = 4 DESCRIPTION = "Item 4: The integer part of the observable. The fractional part is in Column 4 (Item 5). See Item 10 for the data type stored in these fields. The Doppler observable (in Hertz) is computed according to the following equation. The time tag tr is the mid-point of the compression interval ti to tj. Observable = [B/|B|]*[(Nj-Ni)/(tj-ti) - |Fb*K + B|] where: B = bias placed on receiver Ni = Doppler count at time ti Nj = Doppler count at time tj ti = start time of interval tj = end time of interval K = spacecraft transponder turnaround ratio, which varies with band used (see Item 11); set to 1 for S-band receivers 11/3 for X-band receivers 176/27 for Ku-band receivers 209/15 for Ka-band receivers (Note: future spacecraft transponders may require different values of K) Fb = (X1/X2)*(X3*Fr + X4) -Fsc + R3 for one-way Doppler = (X1/X2)*(X3*Fr + X4) -(T1/T2)*(T3*Ft + T4) for all other Doppler where: Fr = receiver (VCO) frequency at time tr Fsc = spacecraft (beacon) frequency Ft = transmitter frequency at time tr-RTLT R3 = 0 for S-band receivers = 0 for X-band receivers = 0 for Ku-band receivers = 0 for Ka-band receivers T1 = 240 for S-band transmitters (see Item 12) = 240 for X-band transmitters = 142 for Ku-band transmitters = 14 for Ka-band transmitters T2 = 221 for S-band transmitters = 749 for X-band transmitters = 153 for Ku-band transmitters = 15 for Ka-band transmitters T3 = 96 for S-band transmitters = 32 for X-band transmitters = 1000 for Ku-band transmitters = 1000 for Ka-band transmitters T4 = 0 for S-band transmitters = 6.5 10^9 for X-band transmitters = -7.0 10^9 for Ku-band transmitters = 1.0 10^10 for Ka-band transmitters X1 to X4 have the same values as T1 to T4 but are dependent on the exciter band (Item 13) RTLT is the round-trip light time For Doppler data the residual (sometimes called the pseudo-residual) is the observed Doppler minus the predicted Doppler The range observable is computed as follows: Observable = R - C + Z - S where: R = range measurement C = station delay calibration Z = Z correction, which is the delay resulting from DSN station optics that is not included in routine closed loop calibrations (C) S = spacecraft delay" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "OBSERVABLE - FRACTIONAL PART" DATA_TYPE = MSB_INTEGER START_BYTE = 13 BYTES = 4 DESCRIPTION = "Item 5: The fractional part of the observable, scaled by 10^9. See DESCRIPTION under Column 3 for details on definition." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "ITEMS 6-19" DATA_TYPE = MSB_BIT_STRING START_BYTE = 17 BYTES = 12 DESCRIPTION = "Items 6-19 of the ODF." OBJECT = BIT_COLUMN NAME = "FORMAT ID" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 1 BITS = 3 DESCRIPTION = "Item 6: The Format ID. Set to 2. If this value is 1, the ODF was created on or before 1997-04-14 and will not be accurately described by this set of object definitions. If FORMAT ID = 1, see: JPL/DSN Document 820-13; Rev A DSN System Requirements Detail Interface Design TRK-2-18 DSN Tracking System Interfaces Orbit Data File Interface Mark IVA Effective Date: May 15, 1984" END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "PRIMARY RECEIVING STATION ID" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 4 BITS = 7 DESCRIPTION = "Item 7: The ID Number of the primary Receiving Station." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "TRANSMITTING STATION ID" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 11 BITS = 7 DESCRIPTION = "Item 8: Transmitting Station ID Number. Set to zero if quasar VLBI, one-way (Dippler, phase, or range), or angles data." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "NETWORK ID" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 18 BITS = 2 DESCRIPTION = "Item 9: Network ID Number for primary Receiving Station: Set to: 0 for DSN, Block V exciter 1 for other 2 for OTS (OVLBI Tracking Subnet, where OVLBI is Orbiting VLBI)" END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "DATA TYPE ID" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 20 BITS = 6 DESCRIPTION = "Item 10: Data Type ID Number. Allowed data type values include: 01 = Narrowband spacecraft VLBI, Doppler mode; cycles 02 = Narrowband spacecraft VLBI, phase mode; cycles 03 = Narrowband quasar VLBI, Doppler mode; cycles 04 = Narrowband quasar VLBI, phase mode; cycles 05 = Wideband spacecraft VLBI; nanoseconds 06 = Wideband quasar VLBI; nanoseconds 11 = One-way Doppler; Hertz 12 = Two-way Doppler; Hertz 13 = Three-way Doppler; Hertz 21 = One-way total-count phase; cycles 22 = Two-way total-count phase; cycles 23 = Three-way total-count phase; cycles 36 = PRA Planetary operational discrete spectrum range; range units 37 = SRA Planetary operational discrete spectrum range; range units 41 = RE [GSTDN] Range; nanoseconds 51 = Azimuth angle; degrees 52 = Elevation angle; degrees 53 = Hour angle; degrees 54 = Declination angle; degrees 55 = X angle (where +X is east); degrees 56 = Y angle (where +X is east); degrees 57 = X angle (where +X is south); degrees 58 = Y angle (where +X is south); degrees Notes: Some of the descriptions below refer to 'generic' data types. These are defined as follows: Data Types Generic Term ---------- ------------ 01-06 VLBI 01-04 Narrowband VLBI 05-06 Wideband VLBI 03, 04, 06 Quasar 11-58 Tracking or TRK 01-58 Radiometric" END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "DOWNLINK BAND ID" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 26 BITS = 2 DESCRIPTION = "Item 11: Downlink Band ID. Allowed values include: 0 = Not applicable if angle data, Ku-band otherwise 1 = S-band 2 = X-band 3 = Ka-band" END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "UPLINK BAND ID" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 28 BITS = 2 DESCRIPTION = "Item 12: Uplink Band ID. Allowed values include: 0 = Not applicable if angle data or 1-way data, Ku-band otherwise 1 = S-band 2 = X-band 3 = Ka-band" END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "EXCITER BAND ID" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 30 BITS = 2 DESCRIPTION = "Item 13: Exciter Band ID. Allowed values include: 0 = Not applicable if angle data, Ku-band otherwise 1 = S-band 2 = X-band 3 = Ka-band" END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "DATA VALIDITY INDICATOR" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 32 BITS = 1 DESCRIPTION = "Item 14: The data validity flag. Values are: 0 = good 1 = bad" END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "ITEM 15" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 33 BITS = 7 DESCRIPTION = "Item 15: Second receiving station ID number, if VLBI data; Lowest (last) component, if PRA/SRA range data; Integer seconds of observable, if RE range data; Set to 0, otherwise." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "ITEM 16" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 40 BITS = 10 DESCRIPTION = "Item 16: Quasar ID, if VLBI quasar data; Spaceraft ID, otherwise." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "ITEM 17" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 50 BITS = 1 DESCRIPTION = "Item 17: Modulus indicator, if wideband VLBI data; Phase Point indicator, if narrowband VLBI data; Receiver/exciter independent flag, if Doppler, phase, or range data (0=no, 1=yes); Set to 0, otherwise." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "ITEM 18" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 51 BITS = 22 DESCRIPTION = "Item 18: Reference frequency, high part, milliHertz: Transponder frequency, if one-way Doppler or phase; Receiver frequency, if ramped and not one-way; Transmitter frequency otherwise; Set to 0, if angles data." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "ITEM 19" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 73 BITS = 24 DESCRIPTION = "Item 19: Reference frequency, low part, milliHertz. See DESCRIPTION under Item 18 for details." END_OBJECT = BIT_COLUMN END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "ITEMS 20-22" DATA_TYPE = MSB_BIT_STRING START_BYTE = 29 BYTES = 8 DESCRIPTION = "Items 20-22 of the ODF." OBJECT = BIT_COLUMN NAME = "ITEM 20" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 1 BITS = 20 DESCRIPTION = "Item 20: If narrowband VLBI data: (Phase Calibration Flag minus 1) times 100000, plus Channel ID Number times 10000. If wideband VLBI data: (Channel Sampling Flag minus 1) times 100000, plus Mode ID number times 10000, plus Modulus high-part in 10^-1 nanoseconds. If OTS Doppler data: Train Axis Angle in millidegrees. If PRA/SRA range data: Uplink Ranging Transmitter In-Phase Time Offset from Sample Timetag in seconds Otherwise, set to 0." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "ITEM 21" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 21 BITS = 22 DESCRIPTION = "Item 21: If wideband VLBI data: Modulus low-part (units are nanoseconds after the value is multiplied by 10^-7). If Doppler, phase, or narrowband VLBI data: Compression time in hundredths of a second. If PRA/SRA range data: Highest (first) Component times 100000, plus Downlink Ranging Transmitter Coder In-Phase Time Offset from Sample Timetag in seconds. Otherwise, set to 0." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "ITEM 22" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 43 BITS = 22 DESCRIPTION = "Item 22: If VLBI data: Second Receiving Station Downlink Delay in nanoseconds. If Doppler, phase, or range data: Transmitting Station Uplink Delay in nanoseconds. Otherwise, set to 0." END_OBJECT = BIT_COLUMN END_OBJECT = COLUMN END_OBJECT = ODF3C_TABLE OBJECT = ODF4A26_TABLE NAME = "RAMP GROUP 26 HEADER" INTERCHANGE_FORMAT = BINARY ROWS = 1 COLUMNS = 4 ROW_BYTES = 16 ROW_SUFFIX_BYTES = 20 DESCRIPTION = "Ramp Groups are usually the fourth of several groups of records in an Orbit Data File (ODF). They contain information on tuning of receivers or transmitters. There is usually one Ramp Group for each DSN station. The Ramp Group Header is the first record in each Ramp Group. It is one 36-byte record and is followed by one or more 36- byte Ramp Group data records. Data records are time ordered within each Ramp Group. The Ramp Group may be omitted from an ODF. The row suffix bytes in the Ramp Group Header are set to 0." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "PRIMARY KEY" DATA_TYPE = MSB_INTEGER START_BYTE = 1 BYTES = 4 DESCRIPTION = "Item 1: The Primary Key indicates the type of data records to follow. In the Ramp Group Header this field is set to 2030." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "SECONDARY KEY" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 5 BYTES = 4 DESCRIPTION = "Item 2: Set to the Station ID Number." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "LOGICAL RECORD LENGTH" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 9 BYTES = 4 UNIT = PACKET DESCRIPTION = "Item 3: The Logical Record Length gives the number of 36-byte physical records making up each logical record in a Ramp Group data record. For the Ramp Group it is set to 1." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "GROUP START PACKET NUMBER" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 13 BYTES = 4 DESCRIPTION = "Item 4: The Group Start Packet Number gives the number of the ODF packet containing the Ramp Group Header; packet numbering starts with 0 for the File Label Group Header." END_OBJECT = COLUMN END_OBJECT = ODF4A26_TABLE OBJECT = ODF4B26_TABLE NAME = "RAMP GROUP 26 DATA" INTERCHANGE_FORMAT = BINARY ROWS = 94 COLUMNS = 9 ROW_BYTES = 36 DESCRIPTION = "Ramp Groups are usually the fourth of several groups of records in an Orbit Data File (ODF). They contain information on tuning of receivers or transmitters. There is usually one Ramp Group for each DSN station. The Ramp Group Header is the first record in each Ramp Group. It is one 36-byte record and is followed by one or more 36- byte Ramp Group data records. Data records are time ordered within each Ramp Group. The Ramp Group may be omitted from an ODF." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "RAMP START TIME - INTEGER PART" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 1 BYTES = 4 UNIT = SECOND DESCRIPTION = "Item 1: The integer part of the ramp start time, measured from 0 hours UTC on 1 January 1950." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "RAMP START TIME - FRACTIONAL PART" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 5 BYTES = 4 UNIT = NANOSECOND DESCRIPTION = "Item 2: The fractional part of the ramp start time - see Column 1 (Item 1)." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "RAMP RATE - INTEGER PART" DATA_TYPE = MSB_INTEGER START_BYTE = 9 BYTES = 4 DESCRIPTION = "Item 3: The integer part of the ramp rate." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "RAMP RATE - FRACTIONAL PART" DATA_TYPE = MSB_INTEGER START_BYTE = 13 BYTES = 4 DESCRIPTION = "Item 4: The fractional part of the ramp rate, in units of 10^-9 of Column 3." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "ITEMS 5-6" DATA_TYPE = MSB_BIT_STRING START_BYTE = 17 BYTES = 4 DESCRIPTION = "Items 5-6 of the ODF." OBJECT = BIT_COLUMN NAME = "RAMP START FREQUENCY - GHZ" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 1 BITS = 22 UNIT = GIGAHERTZ DESCRIPTION = "Item 5: Ramp Start Frequency, integer GHz. If this value is non-zero, Ramp Start Frequency and Ramp Rate are at sky level." END_OBJECT = BIT_COLUMN OBJECT = BIT_COLUMN NAME = "STATION ID" BIT_DATA_TYPE = MSB_UNSIGNED_INTEGER START_BIT = 23 BITS = 10 DESCRIPTION = "Item 6: Receiving/Transmitting Station ID Number." END_OBJECT = BIT_COLUMN END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "RAMP START FREQUENCY - INTEGER PART" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 21 BYTES = 4 UNIT = HERTZ DESCRIPTION = "Item 7: The integer part of the Ramp Start Frequency, modulo 10^9." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "RAMP START FREQUENCY - FRACTIONAL PART" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 25 BYTES = 4 DESCRIPTION = "Item 8: The fractional part of the Ramp Start Frequency, in units of 10^-9 of Column 6." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = "RAMP END TIME - INTEGER PART" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 29 BYTES = 4 UNIT = SECOND DESCRIPTION = "Item 9: The integer part of the ramp end time, measured from 0 hours UTC on 1 January 1950." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = "RAMP END TIME - FRACTIONAL PART" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 33 BYTES = 4 UNIT = NANOSECOND DESCRIPTION = "Item 10: The fractional part of the ramp end time (see Column 8)." END_OBJECT = COLUMN END_OBJECT = ODF4B26_TABLE OBJECT = ODF8A_TABLE NAME = "END OF FILE GROUP HEADER" INTERCHANGE_FORMAT = BINARY ROWS = 1 COLUMNS = 4 ROW_BYTES = 16 ROW_SUFFIX_BYTES = 20 DESCRIPTION = "The End of File Group is usually the eighth and last of several groups of records in an Orbit Data File (ODF). It is a single record of 36-bytes and denotes the logical end of the ODF. Row suffix bytes are set to 0." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "PRIMARY KEY" DATA_TYPE = MSB_INTEGER START_BYTE = 1 BYTES = 4 DESCRIPTION = "Item 1: The Primary Key indicates the type of data records to follow. In the End of File Group this field is set to -1." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "SECONDARY KEY" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 5 BYTES = 4 DESCRIPTION = "Item 2: The Secondary Key is not used in the ODF. It is set to 0." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "LOGICAL RECORD LENGTH" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 9 BYTES = 4 UNIT = PACKET DESCRIPTION = "Item 3: The Logical Record Length is set to 0 in the End of File Group, indicating that no logical records follow." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "GROUP START PACKET NUMBER" DATA_TYPE = MSB_UNSIGNED_INTEGER START_BYTE = 13 BYTES = 4 DESCRIPTION = "Item 4: The Group Start Packet Number gives the number of the ODF packet containing the End of File Group; packet numbering starts with 0 for the File Label Group Header." END_OBJECT = COLUMN END_OBJECT = ODF8A_TABLE OBJECT = ODF8B_TABLE NAME = "END OF FILE GROUP DATA" INTERCHANGE_FORMAT = BINARY ROWS = 104 COLUMNS = 1 ROW_BYTES = 36 DESCRIPTION = "The End of File Group Data are the last several records in an Orbit Data File (ODF). They are not defined, and simply fill out the final 8064-byte logical blocks in the file." OBJECT = COLUMN NAME = "SPARE" DATA_TYPE = MSB_INTEGER BYTES = 36 START_BYTE = 1 ITEMS = 9 ITEM_BYTES = 4 ITEM_OFFSET = 4 END_OBJECT = COLUMN END_OBJECT = ODF8B_TABLE END