PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2014-04-01 NOTE = "AAREADME.TXT describes this volume." END_OBJECT = TEXT END Gravity Recovery and Interior Laboratory (GRAIL) Raw Science Data (LGRS EDR) Archive Volume ============================================================================ Introduction ============================================================================ This archive (GRAIL_0001) contains raw science data (EDRs), originating from spacecraft telemetry, in time order with duplicates and transmission errors removed. The data are NASA Level 0 and are stored in this archive for historical purposes only. All Level 0 products have been processed to Level 1A (available on PDS volume GRAIL_0101). The format and content of this and all GRAIL archive volumes are described in the GRAIL Archive Volume Software Interface Specification (ARCHSIS.PDF). The GRAIL Data Product Software Interface Specification (DPSIS.PDF) provides a detailed description of all GRAIL data products. These documents are located in the DOCUMENT directory. ============================================================================ Volume Format ============================================================================ All science data are located in the LEVEL_0 directory. The INDEX directory contains a listing of all of the data products included on the volume. The CATALOG directory contains PDS documentation describing the mission, spacecraft, instrument, and data set. Additional information on volume organization is given in the Archive Volume SIS (described above), and in the section 'Volume Contents' below. ============================================================================ File Formats ============================================================================ The data files on this volume are provided in binary format (extension .DAT) as well as ASCII format (extension .ASC). Each data file is also accompanied by a detached PDS label file (extension .LBL), an ASCII file containing information describing the data file and data record format. Catalog files (extension .CAT) are provided in ASCII format. Document files describing the volume and the data are given in ASCII and PDF formats. Text files, including data files of ASCII text and all labels (*.LBL) and tables (*.TAB), are delimited with carriage-return (ASCII 13) and line-feed (ASCII 10) pairs at the end of each line. Note that while both label and catalog files are ASCII, some operating systems will not recognize the .LBL and .CAT extensions as ASCII types. It may be necessary to either remap these extensions as ASCII in the system or text browser, or else to open the files from within the text browser. ============================================================================ Volume Contents ============================================================================ Directory Structure and Contents for LGRS EDR Archive Volume The following illustration shows the directory structure overview for the LGRS EDR archive volume, which bears the PDS-assigned volume ID GRAIL_0001. The LEVEL_0 directory is divided into subdirectories by start date, wherein each subdirectory contains all data products for that date. These data are archived mainly for the sake of completeness, as they have already been processed to Level 1A in the LGRS CDR data set by the GRAIL Science Data System (SDS) team. However, the SOFTWARE directory contains example utilities or application programs to aid the user in viewing or extracting information from the Level-0 data product files if desired. |===================================================================| | | | GRAIL-L-LGRS-2-EDR-V1.0 (GRAIL_0001) | | | |===================================================================| | | | root | | | | | |- AAREADME.TXT | | |- ERRATA.TXT | | |- VOLDESC.CAT | | | | | |- [CATALOG] | | | |- CATINFO.TXT | | | |- MISSION.CAT | | | |- INSTHOST_A.CAT | | | |- INSTHOST_B.CAT | | | |- LGRS_A_INST.CAT | | | |- LGRS_B_INST.CAT | | | |- REF.CAT | | | |- PERSON.CAT | | | `- LGRS_EDR_DS.CAT | | | | | |- [DOCUMENT] | | | |- DOCINFO.TXT | | | |- ARCHSIS.HTM | | | |- ARCHSIS.PDF | | | |- ARCHSIS.LBL | | | |- DPSIS.HTM | | | |- DPSIS.PDF | | | |- DPSIS.LBL | | | |- [DPSIS_IMAGES] | | | | |- IMAGE001.JPG | | | | |- IMAGE002.JPG | | | | |- IMAGE003.GIF | | | | |- IMAGE004.JPG | | | | |- IMAGE005.GIF | | | | |- IMAGE006.JPG | | | | |- IMAGE007.JPG | | | | |- IMAGE008.JPG | | | | |- IMAGE009.JPG | | | | |- IMAGE010.JPG | | | |- 090_REVC_1.TXT | | | |- 090_REVC_1.PDF | | | |- 090_REVC_1.LBL | | | |- 0159_SCIENCE_L5.TXT | | | |- 0159_SCIENCE_L5.LBL | | | |- [0159_SCIENCE_L5_IMAGES] | | | | |- 0159_SCIENCE2_1.JPG | | | | |- 0159_SCIENCE2_2.JPG | | | | |- 0159_SCIENCE2_3.JPG | | | | |- 0159_SCIENCE2_4.JPG | | | | |- 0159_SCIENCE2_5.JPG | | | | |- 0159_SCIENCE2_6.JPG | | | | |- 0159_SCIENCE2_7.JPG | | | |- 0161_TELECOMM_L5_8.TXT | | | |- 0161_TELECOMM_L5_8.PDF | | | |- 0161_TELECOMM_L5_8.LBL | | | |- 0171_TELECOMM_NJPL_L5.TXT | | | |- 0171_TELECOMM_NJPL_L5.PDF | | | |- 0171_TELECOMM_NJPL_L5.LBL | | | |- 0172_TELECOMM_CHDO_REVE_L5.TXT | | | |- 0172_TELECOMM_CHDO_REVE_L5.LBL | | | |- ATBD.PDF | | | |- ATBD.HTM | | | |- [ATBD_IMAGES] | | | | |- IMAGE001.PNG - IMAGE052.PNG | | | |- ATBD.LBL | | | |- BLACKJACKDLP.TXT | | | |- BLACKJACKDLP.PDF | | | |- BLACKJACKDLP.LBL | | | |- DSN006_MEDIALCAL_REV2.HTM | | | |- DSN006_MEDIALCAL_REV2.LBL | | | |- FORTNIGHT_CALCULATION.HTM | | | |- FORTNIGHT_CALCULATION.PDF | | | |- FORTNIGHT_CALCULATION.LBL | | | |- GPA_TD_D_71987_REVE.TXT | | | |- GPA_TD_D_71987_REVE.PDF | | | |- GPA_TD_D_71987_REVE.LBL | | | |- GRAIL_TIMING.HTM | | | |- GRAIL_TIMING.PDF | | | |- GRAIL_TIMING.LBL | | | |- [GRAIL_TIMING_IMAGES] | | | | |- GRAIL_TIMING_0.JPG | | | | |- GRAIL_TIMING_1.JPG | | | | |- GRAIL_TIMING_2.JPG | | | | |- GRAIL_TIMING_3.JPG | | | |- LIB_10_GRAIL_COORD_TRANS_REV1.TXT | | | |- LIB_10_GRAIL_COORD_TRANS_REV1.PDF | | | |- LIB_10_GRAIL_COORD_TRANS_REV1.LBL | | | |- NAV023_ODF_2_18_REV3.HTM | | | |- NAV023_ODF_2_18_REV3_FIG2_1.JPG | | | |- NAV023_ODF_2_18_REV3.LBL | | | |- ONCE_UPON_A_FORTNIGHT.TXT | | | |- ONCE_UPON_A_FORTNIGHT.PDF | | | |- ONCE_UPON_A_FORTNIGHT.LBL | | | |- RSDMAP.HTM | | | |- RSDMAP.LBL | | | |- SHADR.HTM | | | |- SHADR.LBL | | | |- SHBDR.HTM | | | |- SHBDR.LBL | | | |- SPK_MM_SIS.HTM | | | |- SPK_MM_SIS.LBL | | | |- T2_24_L5.HTM | | | |- T2_24_L5.LBL | | | |- [T2_24_L5_IMAGES] | | | | |- T2_24_IMG_0.JPG | | | | |- T2_24_IMG_1.JPG | | | | |- T2_24_IMG_2.JPG | | | |- TNFSIS.TXT | | | |- TNFSIS.LBL | | | |- TRACKINGDATAMESSAGESTANDARD.TXT | | | |- TRACKINGDATAMESSAGESTANDARD.PDF | | | |- TRACKINGDATAMESSAGESTANDARD.LBL | | | |- TRK_2_21_950831.TXT | | | `- TRK_2_21_950831.LBL | | | | | |- [INDEX] | | | |- INDXINFO.TXT | | | |- INDEX.LBL | | | `- INDEX.TAB | | | | | |- [SOFTWARE] | | | |- SOFTINFO.TXT | | | |- SOFTWARE.ZIP | | | `- SOFTWARE.LBL | | | | | |- [CALIB] | | | |- CALINFO.TXT | | | |- GRAILCOMPONENTS.TXT | | | `- GRAILCOMPONENTS.LBL | | | | | |- [LEVEL_0] | | | |- [YYYY_MM_DD] | | | |- DTC00_YYYY_MM_DD_S_RL.EXT | | | |- EHK00_YYYY_MM_DD_S_RL.EXT | | | |- LTB00_YYYY_MM_DD_S_RL.EXT | | | |- MAS00_YYYY_MM_DD_S_RL.EXT | | | |- S7200_YYYY_MM_DD_S_RL.EXT | | | |- S7300_YYYY_MM_DD_S_RL.EXT | | | |- SAE00_YYYY_MM_DD_S_RL.EXT | | | |- SCA00_YYYY_MM_DD_S_RL.EXT | | | |- STC00_YYYY_MM_DD_S_RL.EXT | | | |- TDE00_YYYY_MM_DD_S_RL.EXT | | | |- THR00_YYYY_MM_DD_S_RL.EXT | | | `- WRS00_YYYY_MM_DD_S_RL.EXT | | | | | `- [EXTRAS] | | | |- EXTRINFO.TXT | | | `- FORTNIGHT_CALCULATION.XLS | |===================================================================| Directory Contents: Directory This is the top-level directory of the data volume. The following are files contained in the root directory. AAREADME.TXT: (This file) General information file. Provides users with information about the LGRS EDR data products. Directs user to other documents on the volume containing more detailed information. VOLDESC.CAT: PDS file containing the VOLUME object. This gives a high level description of the contents of the volume. Information includes: production date, producer name and institution, volume ID, etc. ERRATA.TXT: Text file for identifying and describing errors and/or anomalies found in the current volume, and possibly previous volumes of a set. Any known errors for the associated volume will be documented in this file. This includes revised EDRs meant to replace EDRs in a previous PDS delivery. Directory This subdirectory contains the catalog object files for the entire volume. The following files are included in the catalog subdirectory. CATINFO.TXT: Identifies and describes of function of each file in the catalog directory. LGRS_A_INST.CAT: An overview of the spacecraft radio system, Lunar Gravity Ranging System A, used for Gravity Science on GRAIL, and a summary description of the Deep Space Network instrumentation that supports radio science experiments. LGRS_B_INST.CAT: An overview of the spacecraft radio system, Lunar Gravity Ranging System B, used for Gravity Science on GRAIL, and a summary description of the Deep Space Network instrumentation that supports radio science experiments. INSTHOST_A.CAT: A brief description of the GRAIL-A and DSN components. INSTHOST_B.CAT: A brief description of the GRIAL-B and DSN components. MISSION.CAT: A brief description of the mission. It includes a chronology of events, definition of mission phases, and science objectives. PERSON.CAT: A listing of key people involved in analyzing the gravity data and in producing the archival data set. REF.CAT: A listing of references used elsewhere in the catalog files and of references that might be generally useful in working with these data. LGRS_EDR_DS.CAT: A description of the GRAIL raw spacecraft data set (LGRS EDR, GRAIL-L-LGRS-2-EDR-V1.0) contained in the GRAIL_0001 archival volume. Directory This subdirectory contains the documentation that will be needed in order to understand and analyze the data. Each data set contains the document collection for the entire archive; not all documents are necessary for understanding every data set. Files are stored in PDF and ASCII formats. DOCINFO.TXT: Identifies and describes the function of each file in the DOCUMENT directory. Please see this file for the full document list. Directory This subdirectory contains the indices for the LGRS EDR data products. The following files are contained in the index subdirectory. INDXINFO.TXT: Identifies and describes the function of each file in the index subdirectory. This includes a description of the structure and contents of each index table in the subdirectory and usage notes. INDEX.TAB: The index file is organized as a table; there is one entry for each of the data files included in the LGRS EDR data set; the columns contain parameters that describe the data as well as instrument and spacecraft parameters. INDEX.LBL: Detached PDS label for INDEX.TAB. Directory The SOFTWARE directory contains utilities or application programs to aid the user in viewing or extracting data from the Level 0 data product files. The codes are provided as illustrations of how to extract the blackjack packets from blackjack binary data. For a description of blackjack, see section 4.2.1 in DPSIS.PDF. SOFTINFO.TXT: Description of software directory files. SOFTWARE.ZIP: Compressed ZIP file containing the software files listed below. SOFTWARE.LBL: PDS label for SOFTWARE.ZIP. The following files are in the compressed ZIP file SOFTWARE.ZIP: TRSRCRC.H: Interface for the TRSRCRC class. This class provides standard X-MODEM-style CRC generation and checking. TRSRFLAGBYTE.H: Interface for the TRSRFlagByte class. This class defines the TRSR packet header flag byte type. TRSRHEADER.H: Interface for the TRSRHeader class. TRSRRCVBUFFER.H: Interface for a receive buffer class. TRSRRCVPACKET.H: Interface for the TRSR receive packet class. TRSRSENDPACKET.H: Interface for the TRSR send packet class. TESTAPP.CPP: A receiver-based slp to test the TRSR output protocol. TRSRCRC.CPP: Implementation for the TRSRCRC class. This class provides standard X-MODEM-style CRC generation and checking. TRSRFLAGBYTE.CPP: Implementation for the TRSRFlagByte class. This class defines the TRSR packet header flag byte type. TRSRHEADER.CPP: Implementation for the TRSRHeader class. This class defines the TRSR packet header. TRSRRCVBUFFER.CPP: Implementation of a receive buffer class. TRSRRCVPACKET.CPP: Implementation of the TRSR receive packet base class. TRSRSENDPACKET.CPP: Implementation of the TRSR send packet base class. Directory The CALIB directory contains one file detailing spacecraft properties such as dimensions and reflectivity. CALINFO.TXT: Description of calibration directory files. GRAILCOMPONENTS.TXT: Abstract of a paper describing the spacecraft bus component model with dimensions and orientations, as well as the specular/diffuse reflectivity properties of the spacecraft components. Points to online published paper. GRAILCOMPONENTS.LBL: PDS label that describes GRAILCOMPONENTS.TXT. Data Directory This is the top level of the directory in which the LGRS EDRs are contained. The LEVEL_0 directory is divided into subdirectories by start date, wherein each subdirectory contains all data products for that date. See DPSIS.PDF for information on data product types. Directory This directory contains ancillary material that may be useful but is not required for the understanding of the archive. EXTRINFO.TXT: Identifies and describes the function of each file in the EXTRAS directory. Please see this file for the files list. ============================================================================ Errata ============================================================================ Every effort has been made to ensure that the data and documentation are of the best possible quality. However, all users are encouraged to verify the correctness of the data prior to submitting any publications or other work based on these data. The file ERRATA.TXT at the root level of this volume contains a list of known deficiencies or caveats associated with data on this volume at the time it was published, if any. It also lists any revisions that have been made to the data set as a whole or to individual products. If you find an error on this volume, please report the error to the PDS Geosciences Node at geosci@wunder.wustl.edu. ============================================================================ Contacts ============================================================================ For questions concerning these data products and documentation, contact: PDS Geosciences Node Washington University Dept. of Earth and Planetary Sciences 1 Brookings Drive St. Louis, MO 63130 314-935-5493 WWW Site: http://pds-geosciences.wustl.edu Electronic mail address: geosci@wunder.wustl.edu For questions regarding PDS Standards or other archive volumes available from the PDS, please contact PDS Operator at the PDS Central Node (at JPL): Internet pds_operator@jpl.nasa.gov Telephone (818) 354-4321 U.S. Mail Planetary Data System, PDS Operator Jet Propulsion Laboratory Mail Stop 202-101 4800 Oak Grove Dr. Pasadena, CA 91109-8099