urn:nasa:pds:mess-rs-raw:data-ddor:092811400sc236dss25_ddor 1.0 1.13.0.0 Product_Observational Verma, A. K.; Perry, M. E.; Lemoine, F. G.; Smith, D. E.; Ensor, S.; Reid, M. R. 2020 MESSENGER Radio Science Delta Differential One-way Ranging (DDOR) 2020-10-12 1.0 This data file has been migrated from PDS3 PRODUCT_ID 092811400SC236DSS25DDOR_234 in data set MESS-V/H-RSS-1-EDR-RAWDATA-V1.0 to PDS4. The data file has not been changed; a new PDS4 label was created as part of the migration process. 2009-10-08T15:08:00Z 2009-10-08T15:55:00Z Science Raw MESSENGER raw radio tracking data Radio Science MErcury Surface, Space ENvironment, GEochemistry, and Ranging Mission Mission urn:nasa:pds:context:investigation:mission.messenger data_to_investigation MESSENGER Spacecraft urn:nasa:pds:context:instrument_host:spacecraft.mess is_instrument_host RSS Instrument urn:nasa:pds:context:instrument:rss.mess is_instrument NASA Deep Space Network Observatory urn:nasa:pds:context:facility:observatory.dsn is_facility DSN Instrumentation Instrument urn:nasa:pds:context:instrument:dsn.rss is_instrument DSN Antenna DSS 25 Telescope urn:nasa:pds:context:telescope:goldstone.dss25_34m is_telescope Mercury Planet urn:nasa:pds:context:target:planet.mercury data_to_target urn:nasa:pds:radiosci.documentation:dsn.trk-2-34:2008-02-29 data_to_document This document describes TRK-2-34 data; the DDOR is the extraction of data type 10 from a TRK-2-34 original. See sections 3.1.1-3.1.4, 3.1.4.4, and 3.1.5.4.1 in the referenced document. MESS-V/H-RSS-1-EDR-RAWDATA-V1.0:092811400SC236DSS25DDOR_234 data_to_raw_source_product PDS Geosciences Node The value for external_source_product_identifier is constructed from the PDS3 DATA_SET_ID, an ASCII colon character, and the PDS3 PRODUCT_ID. 092811400sc236dss25_ddor.dat 2020-10-12T14:13:23 2688 d4f7ac939ce0c8cc1d50e407b7f1d08e VLBI (Data Type 10) 0 12 Raw radio tracking data. 0 5 224 SFDU Label 1 1 6 0 The SFDU label 1 20 SFDU Control Authority 1 1 ASCII_String 4 An ASCII string giving the SFDU Control Authority for this data type. Set to "NJPL", meaning the data description information for this type of SFDU is maintained by the NASA/JPL Control Authority. SFDU Label Version ID 2 5 ASCII_String 1 An ASCII character giving the SFDU Label Version Identifier. Set to "2", meaning the length given in field 6 is formatted as a binary unsigned integer. SFDU Class ID 3 6 ASCII_String 1 An ASCII character giving the SFDU Class Identifier. Set to "I", meaning this is a Compressed Header Data Object (CHDO) structured SFDU. SFDU Reserved 4 7 UnsignedMSB2 2 These two bytes are not defined. SFDU Data Description ID 5 9 ASCII_String 4 An ASCII string giving the SFDU Data Description Identifier. Possible values are: C123 = Uplink data types C124 = Downlink data types C125 = Derived data types C126 = Interferometric data types C127 = Filtered data types SFDU Length 6 13 UnsignedMSB8 8 byte The number of remaining bytes in the SFDU after the 20-byte SFDU label. Aggregation CHDO Label 2 1 2 0 The Aggregation CHDO Label 21 4 Header Aggregation CHDO Type 1 1 UnsignedMSB2 2 Header Aggregation CHDO Type. Set to "1", meaning this CHDO is an aggregation of header CHDOs. The NJPL Control Authority maintains a registry of CHDO types. Header Aggregation CHDO Length 2 3 UnsignedMSB2 2 byte Header Aggregation CHDO Length. Primary CHDO 3 1 6 0 The Primary CHDO 25 8 Primary Header CHDO Type 1 1 UnsignedMSB2 2 Primary Header CHDO Type. Set to to 2, meaning this CHDO is a primary header CHDO. The NJPL Control Authority maintains a registry of CHDO types. Primary Header CHDO Length 2 3 UnsignedMSB2 2 byte Primary Header CHDO Length. Set to 4, meaning length of the value field of the Primary Header CHDO is 4 bytes. Major Data Class 3 5 UnsignedByte 1 Major Data Class. Set to 6, meaning these are ground station monitor data. Minor Data Class 4 6 UnsignedByte 1 Minor Data Class. Set to 14 meaning these are processed tracking data. Mission Identifier 5 7 UnsignedByte 1 Mission Identifier. Set to a number between 0 and 255. Format Code 6 8 UnsignedByte 1 Format Code; also known as the data type. The following data types (DT) are possible: 0 = Uplink Carrier Phase; 1 = Downlink Carrier Phase; 2 = Uplink Sequential Ranging Phase; 3 = Downlink Sequential Ranging Phase; 4 = Uplink PN Ranging Phase; 5 = Downlink PN Ranging Phase; 6 = Doppler; 7 = Sequential Ranging; 8 = Angles; 9 = Ramps; 10 = VLBI; 11 = DRVID; 12 = Smoothed Noise; 13 = Allan Deviation; 14 = PN Ranging; 15 = Tone Ranging; 16 = Carrier Observable; 17 = Total Phase Observable Secondary CHDO 135 4 1 35 0 Secondary CHDO 135 for interferometric data types 33 92 secondary_chdo_type 1 1 UnsignedMSB2 2 Type attribute of the secondary CHDO. The following values are possible: 132 = uplink data types; 133 = downlink data types; 134 = derived data types; 135 = interferometric data types; 136 = filtered data types. Set to 135 for this Table. secondary_chdo_length 2 3 UnsignedMSB2 2 Length attribute of the secondary CHDO. Indicates the length of the value field (bytes after this item) of the secondary CHDO. The following values are possible: 66 = uplink data types; 110 = downlink data types; 124 = derived data types; 88 = interferometric data types; 98 = filtered data types. Set to 88 for this Table. orig_id 3 5 UnsignedByte 1 Originator ID. Indicates where this SFDU originated. Values between 0 and 255 are allowed. last_modifier_id 4 6 UnsignedByte 1 Last modifier ID. Indicates where the contents of this SFDU were last modified. Values between 0 and 255 are allowed. reserve1a 5 7 UnsignedByte 1 Reserved for future expansion of the next field (scft_id). A value of 0 is expected. scft_id 6 8 UnsignedByte 1 Spacecraft number. Values between 1 and 255 are allowed. rec_seq_num 7 9 UnsignedMSB4 4 Record sequence number (RSN). Begins with zero, then increments by one for each successive VLBI tracking SFDU of the same data type. Wraps around from 2**32-1 to zero. year 8 13 UnsignedMSB2 2 Time tag -- year doy 9 15 UnsignedMSB2 2 Time tag -- day of year sec 10 17 IEEE754MSBDouble 8 second Time tag -- seconds of day rct_day 11 25 UnsignedMSB2 2 day Record creation time -- days since 1 January 1958. rct_msec 12 27 UnsignedMSB4 4 %10d millisecond Record creation time -- milliseconds of day ul_dss_id 13 31 UnsignedByte 1 Primary uplink antenna number. A value between 0 and 255. dl_dss_id 14 32 UnsignedByte 1 Primary downlink antenna number. Values from 0 to 255 are allowed. dl_dss_id_2 15 33 UnsignedByte 1 Secondary downlink antenna number. Values from 0 to 255 are allowed. dl_band 16 34 UnsignedByte 1 Downlink frequency band. 0 = Unknown; 1 = S-band; 2 = X-band; 3 = Ka-band; 4 = Ku-band; 5 = L-band prdx_mode 17 35 UnsignedByte 1 Predicts mode. 0 = No Predicts; 1 = One-way; 2 = Two-way; 3 = Three-way ul_band 18 36 UnsignedByte 1 Uplink Frequency band. 0 = Unknown; 1 = S-band; 2 = X-band; 3 = Ka-band; 4 = Ku-band; 5 = L-band; 6 = C-band Valid only if prdx_mode is 2 or 3. A value of 0 means that the number is unknown or not valid (e.g., no uplink). rec_type 19 37 UnsignedByte 1 Record type. 71 = Spacecraft DOD; 72 = Quasar DOD; 73 = Spacecraft DOR; 74 = Quasar DOR source_type 20 38 UnsignedByte 1 VLBI source. 0 = Quasar; 1 = Spacecraft fts_vld_flag 21 39 UnsignedByte 1 Frequency and Timing (FTS) validity. 0 = Equipment is not synced with FTS; 1 = Equipment is synced with FTS reserve1b 22 40 UnsignedByte 1 Reserved. One byte. array_flag 23 41 UnsignedByte 1 Array flag for primary antenna. 0 = Not arrayed; 1 = Arrayed with Full Spectrum Processor subsystem #1; 2 = Arrayed with Full Spectrum Processor subsystem #2 array_flag_2 24 42 UnsignedByte 1 Array flag for secondary antenna. 0 = Not arrayed; 1 = Arrayed with Full Spectrum Processor subsystem #1; 2 = Arrayed with Full Spectrum Processor subsystem #2 array_delay 25 43 IEEE754MSBDouble 8 second Array delay value at primary antenna. Time delay added to signal path by arraying equipment. Obtained from arraying equipment. Any measurements include this delay. Valid only if Array Flag (array_flag in field 23) is non-zero. Values from 0.0 to 1.0 are allowed. array_delay_2 26 51 IEEE754MSBDouble 8 second Array delay value at secondary antenna. Time delay added to path by arraying equipment. Obtained from arraying equipment. Any measurements include this delay. Valid only if Secondary Antenna Array Flag (array_flag_2 in field 24) is non-zero. Values from 0.0 to 1.0 are allowed. rcv_time_tag_delay 27 59 IEEE754MSBDouble 8 second Receive time tag delay at primary antenna. Value offsets downlink time tag (e.g., for Goldstone Beam Wavefuide antennas). Values from 0.0 to 1.0 are allowed. Value -1.0 indicates invalid (or not provided). rcv_time_tag_delay_2 28 67 IEEE754MSBDouble 8 second Receive time tag delay at secondary antenna. Value offsets downlink time tag (e.g., for Goldstone Beam Wavefuide antennas). Values from 0.0 to 1.0 are allowed. Value -1.0 indicates invalid (or not provided). mod_day 29 75 UnsignedMSB2 2 day Last modification time -- days since 1 January 1958. Values from 0 to 2**16-1 are allowed. mod_msec 30 77 UnsignedMSB4 4 millisecond Last modification time -- milliseconds of day. Values from 0 to 86400999 are allowed. version_num 31 81 UnsignedByte 1 Version number of the assembly that generated the data. Values from 0 to 63 are allowed. sub_version_num 32 82 UnsignedByte 1 Sub-version number of the assembly that generated the data. Values from 0 to 63 are allowed. sub_sub_version_num 33 83 UnsignedByte 1 Sub-sub-version number of the assembly that generated the data. Values from 0 to 63 are allowed. reserve1c 34 84 UnsignedByte 1 Reserved. One byte. reserve8 35 85 UnsignedMSB8 8 Reserved. Eight bytes. VLBI CHDO (Data Type 10) 5 1 21 0 VLBI CHDO (Data Type 10) 125 100 chdo_type 1 1 UnsignedMSB2 2 Type attribute of the VLBI data CHDO. Set to 10 because the CHDO contains binary data. chdo_length 2 3 UnsignedMSB2 2 Length attribute of the VLBI data CHDO value field. Number of bytes after this item. Set to 96. clk_off_epoch_year 3 5 UnsignedMSB2 2 year Clock offset epoch -- year. Values 1958 to 3000 are allowed. clk_off_epoch_doy 4 7 UnsignedMSB2 2 day Clock offset epoch -- day of year. Values 1 to 366 are allowed. clk_off_epoch_sec 5 9 IEEE754MSBDouble 8 second Clock offset epoch -- seconds. Values 0.0 to 86400.9999 are allowed. clk_off_1 6 17 IEEE754MSBSingle 4 second Clock offset at first receiving antenna for scan (UTC-station time). Values -1.0e11 to 1.0e11 are allowed. clk_off_2 7 21 IEEE754MSBSingle 4 second Clock offset at second receiving antenna for scan (UTC-station time). Values -1.0e11 to 1.0e11 are allowed. phs_cal_flag 8 25 UnsignedByte 1 Phase calibration flag. 0 = Unknown; 1 = No calibration; 2 = Default calibration; 3 = Quasar calibration only; 4 = Spacecraft calibration only; 5 = Spacecraft and quasar calibration chan_sampl_flag 9 26 UnsignedByte 1 Channel sampling flag. 1 = Multiplexed; 2 = Dual-frequency combined; 3 = 4 parallel channels quasar_id 10 27 ASCII_String 12 Quasar ID (name of quasar used). quasar_id_num 11 39 UnsignedMSB2 2 Quasar ID numeric (number assigned to the quasar used). Values 0 to 2**16-1 are allowed. data_qual_flag 12 41 UnsignedByte 1 Data quality flag. 0 = Good; 1 = Poor freq_chan_num 13 42 UnsignedByte 1 Frequency channel number. Values 0 to 255 are allowed. Valid only if rec_type (Secondary CHDO, field 19) is 71 or 72. mode_id 14 43 UnsignedByte 1 Mode identifier. 0 = One-way; 1 = Two-way Valid only if rec_type (Secondary CHDO, field 19) is 73; equals 0 otherwise. modulo_flag 15 44 UnsignedByte 1 Modulo flag. 0 = Modded; 1 = Unmodded Valid only if rec_type (Secondary CHDO, field 19) is 73 or 74. ref_freq 16 45 IEEE754MSBDouble 8 hertz Reference frequency. Values 1.0e9 to 4.0e9 are allowed. modulus 17 53 IEEE754MSBDouble 8 nanosecond Modulus. Values 0.0 to 100000.0 are allowed. Valid only if rec_type (Secondary CHDO, field 19) is 73 or 74. dod_cnt_time 18 61 IEEE754MSBSingle 4 second Count time for VLBI delay rate observable. Values 0.0 to 100000.0 are allowed. dod_obs 19 65 IEEE754MSBDouble 8 hertz VLBI delay rate observable. Values -1.0e6 to 1.0e6 are allowed. dor_obs 20 73 IEEE754MSBDouble 8 nanosecond VLBI delay observable. Values -1.0e9 to 1.0e9 are allowed. Reserve20 21 81 ASCII_String 20 Reserved. Twenty bytes.