PDS_VERSION_ID = "PDS3" DATA_SET_ID = "RO-C-RSI-1/2/3-EXT1-1372-V1.0" DATA_SET_NAME = "ROSETTA-ORBITER 67P RSI 1/2/3 ROSETTA EXTENSION 1 1372 V1.0" MISSION_ID = "ROSETTA" MISSION_NAME = "INTERNATIONAL ROSETTA MISSION" MISSION_PHASE_NAME = "ROSETTA EXTENSION 1" PROCESSING_LEVEL_ID = "2" PRODUCT_TYPE = "EDR" TARGET_NAME = "67P/CHURYUMOV-GERASIMENKO 1 (1969 R1)" TARGET_TYPE = "COMET" INSTRUMENT_HOST_NAME = "ROSETTA-ORBITER" INSTRUMENT_HOST_ID = "RO" INSTRUMENT_NAME = "ROSETTA RADIO SCIENCE INVESTIGATION" INSTRUMENT_TYPE = "RADIO SCIENCE" INSTRUMENT_ID = "RSI" PRODUCER_ID = "RIU_COLOGNE" PRODUCER_FULL_NAME = "MARTIN PAETZOLD" PRODUCER_INSTITUTION_NAME= "RHEINISCHES INSTITUT FUER UMWELTFORSCHUNG, PLANETENFORSCHUNG" DSN_STATION_NUMBER = 84 PRODUCT_CREATION_TIME = 2018-11-27T08:42:54.000 SPACECRAFT_CLOCK_START_COUNT = "N/A" SPACECRAFT_CLOCK_STOP_COUNT = "N/A" STANDARD_DATA_PRODUCT_ID = "IFMS3" DATA_QUALITY_ID = "N/A" DATA_QUALITY_DESC = "See the DATASET.CAT for further information on the quality of this data set." INSTRUMENT_MODE_ID = "TWOD_X" INSTRUMENT_MODE_DESC = "TWO-WAY DUAL-FREQUENCY X-BAND U/L X&S-Band D/L" SOURCE_PRODUCT_ID = "R84ICL3L1A_AG1_160260951_00.LBL" SOFTWARE_NAME = "IFMS-READ-PROGRAM1.0" DESCRIPTION = "This label describes two files which apart from the file ending .CFG and .TAB have the same name as this .LBL file. The .CFG file is a ASCII text file and contains configuration information about the Intermediate Frequency & Modem System (IFMS). The .TAB file contains the actual data. For more information see the description of the .TAB file and the note for the .CFG text file below." PRODUCT_ID = "R84ICL3L1B_AG1_160260951_00" OBJECT = FILE RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 118 FILE_RECORDS = 3600 START_TIME = 2016-01-26T09:52:00.000 STOP_TIME = 2016-01-26T10:51:59.000 DESCRIPTION = "This is an IFMS Closed Loop Auto Gain Control (AGC) file containing information about the performance of the Intermediate Frequency & Modem System (IFMS) at the ESA ground station. For more information see column description." ^GAIN_TABLE = "R84ICL3L1B_AG1_160260951_00.TAB" OBJECT = GAIN_TABLE NAME = GAIN_DATA INTERCHANGE_FORMAT = ASCII ROWS = 3600 COLUMNS = 6 ROW_BYTES = 118 OBJECT = COLUMN NAME = "SAMPLE NUMBER" COLUMN_NUMBER = 1 START_BYTE = 1 BYTES = 21 DATA_TYPE = ASCII_INTEGER UNIT = "N/A" DESCRIPTION = "IDENTIFIER OF THE CURRENT SAMPLE" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "ISO-FORMATTED TIME STRING" COLUMN_NUMBER = 2 START_BYTE = 22 BYTES = 24 DATA_TYPE = TIME UNIT = "N/A" DESCRIPTION = "GROUND RECEIVED SAMPLE TIME IN UTC.THE FORMAT IS CCYY-MM-DDTHH:MM:SS.sss" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "DAY OF YEAR" COLUMN_NUMBER = 3 START_BYTE = 46 BYTES = 13 DATA_TYPE = ASCII_REAL UNIT = "DAY" DESCRIPTION = "GROUND RECEIVED UTC sample time in fractional days of year starting with 1.00000000 at midnight (0h) on 1 January." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "EPHEMERIS TIME" COLUMN_NUMBER = 4 START_BYTE = 59 BYTES = 17 DATA_TYPE = ASCII_REAL UNIT = "SECOND" DESCRIPTION = "GROUND RECEIVED SAMPLE TIME IN EPHEMERIS TIME STARTING FROM J2000 (12 h 1 January 2000 TDB)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "CARRIER LEVEL" COLUMN_NUMBER = 5 START_BYTE = 76 BYTES = 21 DATA_TYPE = ASCII_REAL UNIT = "DBM" DESCRIPTION = "POWER OF THE RECEIVED CARRIER SIGNAL RELATIVE TO A POWER OF 1 mW" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "POLARISATION ANGLE" COLUMN_NUMBER = 6 START_BYTE = 97 BYTES = 20 DATA_TYPE = ASCII_REAL UNIT = "CYCLE" DESCRIPTION = "POLARISATION ANGLE OF RECEIVED CARRIER SIGNAL. VALUE GIVES POWER SPLITTING BETWEEN RHC (RIGHT HAND CIRCULAR) AND LHC (LEFT HAND CIRCULAR) POLARISATION. AN ANGLE OF 0.125 (45 DEGREES) WOULD MEAN EQUAL POWER IN RHC AND LHC. AN ANGLE OF 0.25 WOULD MEAN THAT ALL POWER IS IN ONLY ONE POLARISATION. (FOR MEX THIS SHOULD BE RHC.)VALUES SHOULD NORMALLY BE AROUND 0 OR 0.25." END_OBJECT = COLUMN END_OBJECT = GAIN_TABLE END_OBJECT = FILE OBJECT = FILE RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 17444 FILE_RECORDS = 1 START_TIME = 2016-01-26T09:52:00.000 STOP_TIME = 2016-01-26T10:51:59.000 ^CONFIGURATION_TEXT = "R84ICL3L1B_AG1_160260951_00.CFG" OBJECT = CONFIGURATION_TEXT NOTE = "The .CFG file contains a table with useful information about the Doppler recording equipment of the ESA radio antenna ground station: the Intermediate Frequency & Modem System (IFMS). It is in principle the same as the header of the corresponding raw data file in the Level 1A folder. The only difference is that the second column, the sample time in UTC was reformated to ISO format. In addition two other columns with sample time as UTC in fraction of day of year and sample time as ephemeris time in seconds were inserted. See column description of the TABLE object above. In addition the flag values were changed from YES and NO in the 1A file to the numerical values 1 and 0 in the 1B file. For data processors a brief description of the most important keywords: IMPORTANT NOTE: IF ONE OR MORE OF THE FOLLOWING KEYWORDS HAS VALUES N/A THEN PROBABLY SOMETHING WENT WRONG WITH DATA RECORDING OR/AND SIGNAL RECEIVING! Please also note that the header format changed in May gradually. In May 2005 the IFMS3 files already have the new header whereas IFMS1 and IFMS2 still contain the old header. Since end of May 2005 all IFMS files contain the new header. OLD HEADER: DAP_TYPE identifies which Data Acquisition Process (DAP) was used for the data file. There are two subrecording systems for each IFMS receiving device denoted by the numbers 1 and 2. DAP_TYPE = D1 identifies Doppler data from recording system 1 DAP_TYPE = D2 identifies Doppler data from recording system 2 DAP_TYPE = G1 identifies Auto Gain Control (AGC) data from recording system 1 DAP_TYPE = G2 identifies Auto Gain Control (AGC) data from recording system 2 DAP_TYPE = ME identifies meteo data DAP_TYPE = RG identifies ranging data FIRST_SAMPLE_TIME and LAST_SAMPLE_TIME give the time of the first and last sample recorded in the corresponding data file in UTC: Format (CCYYMMDD.HHMMSS.sss). Example: 20040621.025208.000 corresponds to the 2004-06-21T02:52:08.000 in UTC. SAMPLE_PERIOD is the time elapsed between two subsequent measurements in seconds. ACTUAL_CARRIER_INDIC provides the actual uplink carrier frequency offset as follows: ActualCarrierFreqOffset= 50 MHZ - actual_carrier_indic x 17.5E6/2E30. ACTUAL_TONE_INDIC (only meaningful for ranging data) provides the actual tone frequency as follows: tone_frequency=actual_tone_indic x 17.4E6/2E32 Hz. RG_DATA_CORRECTED: (only meaningful for ranging data) Flag to indicate whether the measurements during the ambiguity resolution process have been corrected. The following keywords are needed to compute the actual uplink and downlink frequency: Modulator used to generate the output carrier frequency. Can assume the values 70 or 230 MHz. For each DAP_TYPE there is a corresponding SOURCE keyword of the form DAP_TYPESource (Example: D1Source , D2Source etc.) which can be found further down in the .CFG table and can assume one of the following values: RGD,RCD,SCD. These are abbreviations for Ranging receiver and demodulater, Remnant and Suppress Carrier demodulators. Only the DAP_TYPESource value corresponding to the actual DAP_TYPE as indicated in the 4th row of the .CFG table is meaningful for the corresponding data file. For ranging data DAP_TYPESource is always equal RGD thus there is no such keyword as RgSource. For each DAP_TYPESource value exist two other important keywords of the form: DAP_TYPESourceUplkConv and DAP_TYPESourceDnlkConv (Example RgdUplkConv, RgdDnlkConv) Now the uplink frequency can be computed by: UplinkCarrierFreq=UlmCarFrSel + ActualCarrierFreqOffset + DAP_TYPESourceUplkConv The two keywords DAP_TYPESourceTR1 and DAP_TYPESourceTR2 provide the transponder ratio DAP_TYPESourceTR1/DAP_TYPESourceTR2 with which the frequency of the incoming radio signal on board the space craft was multiplied to generate a coherent downlink frequency. The keyword DAP_TYPESourceCoherTrs is YES if transponder was coherent and NO if transponder was non-coherent. NEW HEADER: The keyword remained essentially the same but DAP_TYPESource of the keywords was removed. instead it is now: the uplink frequency can be computed by: UplinkCarrierFreq=FreqUlmCarFrSel + ActualCarrierFreqOffset + FreqUplkConv The two keywords FreqTR1 and FreqTR2 provide the transponder ratio FreqTR1/FreqTR2 with which the frequency of the incoming radio signal on board the space craft was multiplied to generate a coherent downlink frequency. The keyword FreqCoherTrs is YES if transponder was coherent and NO if transponder was non-coherent. Further explanation of the IFMS confi- guration file format can be found in the MaRS/RSI/VeRa file naming convention docu- ment MEX-MRS-IGM-IS-3016, ROS-RSI-IGM-IS- 3087,VEX-VRA-IGM-IS-3009, which is located under DOCUMENT/MRS_DOC, DOCUMENT/RSI_DOC, DOCUMENT/VRA_DOC respectively. For an even more detailed description see chapter 6 in the IFSM-OCC interface control document IFMS_OCCFTP which is located under DOCUMENT/ESA_DOC . " INTERCHANGE_FORMAT = ASCII PUBLICATION_DATE = 2004-09-21 END_OBJECT = CONFIGURATION_TEXT END_OBJECT = FILE END