PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 80 OBJECT = TEXT PUBLICATION_DATE = 2000-01-18 NOTE = "Software Interface Specification for the Galileo Radio Science Raw Data Archive. Formatted for display or printing at 58 Lines per page with up to 78 constant-width characters per line." END_OBJECT = TEXT END Stanford Center for Radar Astronomy Software Interface Specification Galileo Radio Science Raw Data Archive prepared by Richard A. Simpson Stanford University Stanford, CA 94305-9515 Version 1.0.1 18 January 2000 PREFACE |================================================================| | | | DOCUMENT CHANGE LOG | | | |================================================================| |REVISION|REVISION| SECTION | REMARKS | | NUMBER | DATE | AFFECTED | | |--------+--------+------------+---------------------------------| | 0.1 |96/06/12| All |Adapted by Richard Simpson from a| | | | | SIS for Magellan Radio | | | | | Occultation Raw Data Archive. | |--------+--------+------------+---------------------------------| | 0.2 |97/04/23| All |Edited by T. Priest to reflect | | | | | organizational changes and to | | | | | fill in some TBD items. | |--------+--------+------------+---------------------------------| | 0.3 |99/05/23| All |Edited by T. Priest for Jupiter | | | | |Ephemeris data. | |--------+--------+------------+---------------------------------| | 1.0 |99/07/30| All |Edited by T. Priest for Earth 1 | | | | |and Earth 2 data. | |--------+--------+------------+---------------------------------| | 1.0.1 |00/01/18| All |Editorial corrections/upgrades | |--------+--------+------------+---------------------------------| | 1.0.1 |00/01/18| Fig. 4-1-3 |Change SPACECRAFT_NAME to | | | | 4.1.3 | INSTRUMENT_HOST_NAME | |--------+--------+------------+---------------------------------| | 1.0.1 |00/01/18| 4.2.2.8 |Add TARGET.CAT | | | | 3.1.3 | | | | | Fig. 3-1 | | |================================================================| Distribution PDS/JPL Y. Oliver.............171/264 yolanda.oliver@jpl.nasangov T.L. Brown..............171/264 tyler.l.brown@jpl.nasa.gov C.H. Acton..............301-125L chuck.acton@jpl.nasa.gov PDS/UCLA R. Walker.......6851 Slichter rwalker@igpp.ucla.edu S. Joy...........6707 Geology sjoy@igpp.ucla.edu PDS/NMSU R. Beebe......Dept. Astronomy rbeebe@nmsu.edu Stanford University R.A. Simpson........Packard 332 rsimpson@magellan.stanford.edu G.L. Tyler..........Packard 331 len@nova.stanford.edu D.P. Hinson.........Packard 333 hinson@nimbus.stanford.edu Jet Propulsion Laboratory J.D. Anderson........MS 301-230 john.d.anderson@cc2mhb.jpl.nasa.gov S.W. Asmar...........MS 264-860 sami_w_asmar@jpl.nasa.gov J.K. Campbell........MS 180-401 james.k.campbell@cc2mhb.jpl.nasa.gov F.B. Estabrook.......MS 169-327 frank@bottom.jpl.nasa.gov A.J. Kliore..........MS 161-260 arv@rodan.jpl.nasa.gov T.P. Krisher.........MS 301-125J timothy.p.krisher@cc2mhb.jpl.nasa.gov E.L. Lau.............MS 301-150 eunice@helen.jpl.nasa.gov P. Priest..........MS 264-860 trish@qmail.jpl.nasa.gov R. Woo.............MS 238-725 richard@oberon.jpl.nasa.gov University of Bonn M.K. Bird mbird@astro.uni-bonn.de University of Bochum P. Edenhofer edh@ruba.rz.ruhr-uni-bochum.de University of Cologne M. Paetzold paetzold@geo.uni-koeln.de Contents Preface.....................................................................ii Document Change Log.........................................................ii Distribution...............................................................iii Contents....................................................................iv Acronyms and Abbreviations..................................................vi 1 Introduction..............................................................1 1.1 Overview................................................................1 1.2 Scope...................................................................1 1.3 Applicable Documents....................................................1 1.4 System Siting...........................................................1 1.4.1 Interface Location and Medium.........................................1 1.4.2 Data Sources, Destinations, and Transfer Methods......................2 1.4.3 Generation Method and Frequency.......................................2 1.5 Assumptions and Constraints.............................................3 1.5.1 Usage Constraints.....................................................3 1.5.2 Documentation Conventions.............................................3 1.5.2.1 Data Format Descriptions............................................3 1.5.2.2 Limits of This Document.............................................3 1.5.2.3 Typographic Conventions.............................................3 1.5.3 Time Standards........................................................4 2 Interface Characteristics.................................................5 2.1 Hardware Characteristics and Limitations................................5 2.1.1 Special Equipment and Device Interfaces...............................5 2.1.2 Special Set-Up Requirements...........................................5 2.2 Volume and Size ........................................................5 2.3 Labeling and Identification.............................................5 2.3.1 External Labels.......................................................5 2.3.2 Internal Labels.......................................................5 2.4 Interface Medium Characteristics........................................5 2.5 Backup and Duplicates...................................................5 3 Structure and Organization Overview.......................................7 3.1 Disc Organization.......................................................8 3.1.1 Root Directory........................................................8 3.1.2 CALIB Directory.......................................................8 3.1.3 CATALOG Directory.....................................................8 3.1.4 DOCUMENT Directory....................................................8 3.1.5 GEOMETRY Directory....................................................9 3.1.6 INDEX Directory.......................................................9 3.1.7 Data Directories......................................................9 3.2 Formats.................................................................9 3.3 File Naming Conventions.................................................9 3.3.1 PDS Labels...........................................................10 3.3.2 Text Files...........................................................10 3.3.3 Tabular Files........................................................11 3.3.4 Catalog files........................................................11 4 Detailed Interface Specifications........................................12 4.1 Logical Root Files.....................................................12 4.1.1 AAREADME.TXT File....................................................12 4.1.2 ERRATA.TXT File......................................................12 4.1.3 VOLDESC.CAT File.....................................................12 4.2 Static Directories.....................................................16 4.2.1 CALIB Directory......................................................16 4.2.1.1 CALINFO.TXT File...................................................16 4.2.1.2 DSN Ionosphere Calibration Files...................................16 4.2.1.3 DSN Troposphere Calibration Files..................................17 4.2.1.4 DSN Timing and Polar Motion Files..................................17 4.2.1.5 DSN Weather Data Files.............................................17 4.2.1.6 Galileo LGA Beam Pattern Tables....................................17 4.2.2 CATALOG Directory....................................................17 4.2.2.1 CATINFO.TXT File...................................................17 4.2.2.2 MISSION.CAT File...................................................18 4.2.2.3 INSTHOST.CAT File..................................................18 4.2.2.4 INST.CAT File......................................................18 4.2.2.5 REF.CAT File.......................................................18 4.2.2.6 PERSON.CAT File....................................................18 4.2.2.7 DATASET.CAT File...................................................18 4.2.2.8 TARGET.CAT File....................................................18 4.2.3 DOCUMENT Directory...................................................18 4.2.3.1 DOCINFO.TXT File...................................................18 4.2.3.2 GLLRSSIS.TXT File..................................................19 4.2.3.3 TRK_2_18.TXT File..................................................19 4.2.3.4 TRK_2_21.TXT File..................................................19 4.2.3.5 TRK_2_23.TXT File..................................................19 4.2.3.6 TRK_2_24.TXT File..................................................19 4.2.3.7 TRK_2_25.TXT File..................................................19 4.2.3.8 NAIF Toolkit Documentation.........................................20 4.2.3.9 HANDBOOK Subdirectory..............................................20 4.2.3.10 POSTOPS Subdirectory...............................................20 4.2.3.11 SIS Documents for EOP, GIN, CSP, NAV Constants.....................20 4.3 GEOMETRY Directory.....................................................20 4.3.1 GEOMINFO.TXT File....................................................20 4.3.2 SPK Files............................................................20 4.4 INDEX Directory........................................................21 4.4.1 INDXINFO.TXT File....................................................21 4.4.2 INDEX.LBL File.......................................................21 4.4.3 INDEX.TAB File.......................................................21 4.4.4 CUMINDEX.LBL File....................................................21 4.4.5 CUMINDEX.TAB File....................................................21 4.5 Data Directories.......................................................21 4.5.1 TDF Directory........................................................21 4.5.2 ODF Directory........................................................22 4.5.3 ODR Directory........................................................22 5 Support Staff and Cognizant Personnel....................................23 Figures 3-1 GLL VRF-RDA Directory Structure....................................7 4-1-1 Example Label for GLL VRF-RDA TXT Files...........................12 4-1-3 Example VOLDESC.CAT File..........................................13 Table 4-1-1 DATA_SET_ID Values................................................15 Acronyms and Abbreviations AMMOS Advanced Multi-Mission Operations System ANSI American National Standards Institute ASCII American Standard Code for Information Interchange ATDF Archival Tracking Data File CCSDS Consultative Committee for Space Data Systems CD Compact Disc CMT Celestial Mechanics Team DAT Data Administration Team DOS Disk Operating System DSN Deep Space Network EOF End of File GDS Ground Data System GLL Galileo GO Galileo Orbiter GSFC Goddard Space Flight Center HGA High-Gain Antenna ISO International Standards Organization JPL Jet Propulsion Laboratory K Degrees Kelvin kB Kilobytes LGA Low-Gain Antenna MB Megabytes MGS Mars Global Surveyor NAIF Navigation and Ancillary Information Facility NASA National Aeronautics and Space Administration NAV Navigation Subsystem/Team NMSU New Mexico State University NSSDC National Space Science Data Center ODF Orbit Data File ODR Original Data Record PDB Project Data Base PDS Planetary Data System PSG Project Science Group RDA Raw Data Archive ROM Read-Only Memory RPT Radio Propagation Team RS Radio Science RSSG Radio Science Systems Group RSST Radio Science Support Team RST Radio Science Team SDP Science Data Products SDVT Science Data Validation Team SFDU Standard Formatted Data Unit SIS Software Interface Specification SOPC Science Operations Planning Computer SPK Spacecraft Planet Kernel (NAIF file) TBD To Be Determined TDF Tracking Data File (same as ATDF) UCLA University of California, Los Angeles UTC Coordinated Universal Time VLBI Very Long Baseline Interferometry VRF Venus Range Fix WO Write Once 1 Introduction 1.1 Overview This Software Interface Specification (SIS) describes the format and content of the Galileo (GLL) Radio Science (RS) Raw Data Archive (RDA). The GLL RS RDA comprises several data sets and represents the complete archive of raw data from investigations conducted using the radio link between the Galileo Orbiter (GO) and stations of the NASA Deep Space Network (DSN). It includes over one hundred Compact Disc (CD) Write Once (WO) volumes. The GLL RS RDA is a product of the Galileo Radio Science Support Team (RSST), in consultation with the NASA Planetary Data System (PDS). It is the deliverable raw data archive from the Galileo Celestial Mechanics Team (CMT) and the Galileo Radio Propagation Team (RPT) to PDS. The Galileo Mission is managed by the NASA Jet Propulsion Laboratory (JPL). 1.2 Scope The specifications in this document apply only to the GLL RS RDA. This document provides a detailed description of the interface, including data flow information and a definition of all data objects that flow across the interface. 1.3 Applicable Documents [1] ISO 9660-1988. Information Processing - Volume and File Structure on CD-ROM for Information Exchange, 15 April 1988. [2] Planetary Data System Standards Reference, JPL D-7669, part 2, 3 August 1994. [3] Planetary Science Data Dictionary, JPL D-7116, Rev. C, 20 November 1992. [4] Planetary Data System, Data Preparation Workbook, JPL Publication D-7669, Part 1, Version 3.1, 17 February 1995. [5] TRK-2-18, DSN Tracking System Interfaces: Orbit Data File Interface, Document 820-13 Rev A, 1988. [6] TRK-2-21, DSN Tracking System Interfaces: Timing and Polar Motion Data Interface, Document 820-13 Rev A, 1986. [7] TRK-2-23, DSN Tracking System Interfaces: Media Calibration Data Interface, Document 820-13 Rev A, 1985. [8] TRK-2-24, DSN Tracking System Interfaces: Weather Data Interface, Document 820-13 Rev A, 1986. [9] TRK-2-25, DSN Tracking System Interfaces: Archival Tracking Data File Interface, Document 820-13 Rev A, 1986. [10] RSC-11-10A DSN Radio Science System, Voyager - Neptune/Phobos Original Data Record (ODR), Document 820-13 Rev A, 1988. [11] RSC-11-11 DSN Radio Science System, Original Data Record (ODR) and Original Data Stream (ODS), Document 820-13 Rev A, 1992. 1.4 System Siting 1.4.1 Interface Location and Medium The GLL RS RDA is a set of approximately 100 CD-WO volumes compiled by The GLL RSST at JPL and delivered to the PDS. The CD-WO volumes conform to ISO 9660 standards [1]. 1.4.2 Data Sources, Destinations, and Transfer Methods The GLL RS RDA is a collection of products generated by various elements of the DSN, the Galileo Project, the RSST, and others; it is delivered to the PDS for archive. The files are organized into a small number of data sets, then written to CD-WO volumes in chronological order within each data set. Access to the GLL RS RDA is determined by PDS. 1.4.3 Generation Method and Frequency The GLL RS RDA is organized around two primary data types: Archival Tracking Data Files (ATDFs or TDFs) and Original Data Records (ODRs). Data sets are defined within these data types according to Galileo Radio Science experiment objectives. ATDFs and ODFs are organized into data sets defined according to experiment objectives. One data set includes all closed-loop data from a particular experiment: solar wind observations, gravitational wave searches, gravitational redshift observations, mass determinations, gravity field measurements, Jupiter ephemeris improvement, or occultations. Within a data set, the ATDFs are organized chronologically. Each ATDF or ODF is accompanied by ancillary files likely to be used during analysis or interpretation. Approximately 30 ATDF CD-WO volumes cover the nominal Galileo Mission. ODRs are organized in the same way as ATDFs with separate data sets for each experiment objective. ODRs are also organized chronologically within a data set. Each ODR is accompanied by ancillary files likely to be used during analysis or interpretation. ODR CD-WO volumes contain data collected at variable rates; about 70 CD-WO volumes are expected from the nominal Galileo Mission. GLL RS RDA volumes are produced, reviewed and delivered to PDS as data become available. Each delivery is approximately twelve months after completion of data acquisition. Production occurs in several stages. After sufficient data volume has accumulated to fill another CD-WO volume, the primary data files are inventoried and PDS labels are generated. If not already in conformance, the primary data file name is changed to the form "XXXXXXXX.ext" where "XXXXXXXX" represents no more than eight upper case ASCII characters, digits, or the underscore character and "ext" is a three character (upper case) extension (for example "TDF", "ODF", or "ODR"). In many cases file names are based on the year and day during which the data were collected. Each PDS label is detached (a file in its own right) and has name "XXXXXXXX.LBL". After the primary data files have been assembled, named, and labeled, ancillary files are added, based on dates and times for which there was primary data coverage. These ancillary files are also named and labeled, following the procedure outlined above. Finally documentation files are collected, named, and labeled. The designated files are moved to a special disk partition. Primary data are stored in directories such as TDF and ODR, as appropriate. Ancillary and documentation files are assigned to directories such as CALIB, GEOMETRY, and DOCUMENT. A table of contents for the CD-WO volume is created and placed in the INDEX directory. The CD was pre-mastered; after correction of errors, the final version is produced and distributed. Each GLL RS RDA volume is evaluated internally by the RSST and (to the extent that resources permit) by a representative of PDS, and by one of the Galileo radio science investigators familiar with the data. 1.5 Assumptions and Constraints 1.5.1 Usage Constraints Access to GLL RS RDA volumes is determined by PDS. 1.5.2 Documentation Conventions 1.5.2.1 Data Format Descriptions Data are stored in fields of various sizes and formats ranging from single-bit flags to 64-bit floating point numbers and to character strings. The formats vary widely among file types; users should consult the appropriate SIS for details (See Section 1.3). If a field is described as containing n bytes of ASCII character string data, this implies that the leftmost (lowest numbered) byte contains the first character, the next lowest byte contains the next character, and so forth. Character strings are written to CD-WO with lower numbered bytes preceding higher numbered bytes. 1.5.2.2 Limits of This Document This document applies only to GLL RS RDA volumes. 1.5.2.3 Typographic Conventions This document has been formatted for simple electronic file transfer and display. Line lengths are fixed at 80 ASCII characters, including line delimiters. The last two characters on each line are the carriage-return (ASCII 13) and the line-feed (ASCII 10). No special fonts or structures are included within the file. Constant width characters are assumed for display. Hard copy pagination at the rate of 58 lines per page is assumed. For page numbers consistent with those shown in the Table of Contents, breaks in page numbering immediately before "PREFACE" and immediately before "1. Introduction" will be required. 1.5.3 Time Standards Within GLL RS RDA files that follow PDS standards, times are expressed as a string of up to 24 ASCII characters YYYY-MM-DDThh:mm:ss[.fff][Z] where "-", "T", ":", and "." are fixed delimiters; "YYYY" is the year "19nn"; "MM" is a two-digit month of year; "DD" is a two-digit day of month; "T" separates the date and time segments of the string; "hh" is hour of day; "mm" is the minutes of hour (00-59); "ss" is the seconds of minute (00-59); and "fff" is milliseconds (000-999). The data type "TIME" is assigned to this format. The TIME may be optionally truncated to 19 characters by omitting the last four characters (".fff"). It is also permissible to substitute "YYYY-DDD" for "YYYY-MM-DD", where "DDD" is the day-of-year (001-366). The suffix "Z" may be appended to any time format to indicate explicitly that time is given in UTC. When only the date is required, the 10-character string YYYY-MM-DD may be substituted. The data type "DATE" is assigned to this format. Alternatively, the form "YYYY-DDD" may be substituted, where "DDD" is day-of-year. 2 Interface Characteristics 2.1 Hardware Characteristics and Limitations 2.1.1 Special Equipment and Device Interfaces The GLL RS RDA is distributed on CD-WO volumes which conform to ISO 9660 standards for CD-ROM [1]. Users of the volume must have access to systems which can read these media. 2.1.2 Special Set-Up Requirements None. 2.2 Volume and Size The physical volumes on which the GLL RS RDA resides contain a maximum of 650 megabytes (MB) of data. 2.3 Labeling and Identification 2.3.1 External Labels The physical CD-WO volume bears a label using the following format: ACRONYM_SEQUENCE;VERSION where ACRONYM = GORS SEQUENCE = Snnn where Snnn is a four digit number. S denotes the type of primary data: 0 ATDF or ODF 1 ODR nnn indicates the order in which CD-WO volumes were produced (starting from 0001) VERSION = A single digit indicating the version number of the CD-WO volume. "1" is the original version. For example, GORS_0012;5 is the fifth version of the twelfth ATDF volume. 2.3.2 Internal Labels The contents of the GLL RS RDA volumes will be labeled in accordance with PDS standards. Labeling is described further in subsequent sections. 2.4 Interface Medium Characteristics Each CD-WO volume conforms to ISO 9660 standards [1]. The quantity of data stored is no more than 650 MB per disc. 2.5 Backup and Duplicates The entire contents of each GLL RS RDA volume will be backed up to 8-mm tapes, which will be retained by the RSST. Three copies of each CD-WO volume will be created. One copy will be delivered to PDS, one copy will be retained by the RSST, and one copy will be kept as a spare. The PDS copy will be held by the PDS Discipline Node most appropriate for the data. The National Space Science Data Center (NSSDC) will hold the raw data archives for the gravitational wave searches and redshift observations. ODR volumes from ephemeris improvements and ATDF volumes from the gravity field measurements, and mass determinations will be held by the PDS Navigation and Ancillary Information Facility (NAIF) at JPL; ODR and ATDF volumes from solar conjunction observations will be held by the PDS Planetary Plasma Interactions Node at UCLA; Venus Range Fix and Earth 1 and 2 raw data will be held at the PDS Geophysics Node; and the remaining ODR volumes (from Jupiter and satellite occultations) will be held by the PDS Atmospheres Node at New Mexico State University (NMSU). 3 Structure and Organization Overview 3.1 Disc Organization Each GLL RS RDA volume contains up to two data directories (TDF, ODF, and/or ODR), a CATALOG directory, a DOCUMENT directory, and an INDEX directory. The CALIB and GEOMETRY directories are optional and depend on type of the primary data (Figure 3-1). |================================================================| | Figure 3-1 GLL RS RDA Directory Structure | |================================================================| | | | root | | | | | |- AAREADME.TXT | | |- ERRATA.TXT | | |- VOLDESC.CAT | | | | | |- [CALIB] | | | | | | | |- CALINFO.TXT | | | `- ... | | | | | |- [CATALOG] | | | | | | | |---------------------------------------- | | | |- CATINFO.TXT |- INSTHOST.CAT |- REF.CAT | | | `- MISSION.CAT `- INST.CAT |- PERSON.CAT | | | `- DATASET.CAT | | |- [DOCUMENT] | | | | | | | |---------------------------------------- | | | |- DOCINFO.TXT |- TK_DESCR.TXT |- TRK_2_18.TXT | | | |- GLLRSSIS.TXT |- TK_FTP.TXT |- TRK_2_21.TXT | | | |- HANDBK4.LBL `- TK_INSTL.TXT `- ... | | | |- POSTOPS | | | `- ... | | | | | |- [GEOMETRY] | | | | | | | |- GEOMINFO.TXT | | | `- ... | | | | | |- [INDEX] | | | | | | | |-------------------- | | | |- INDXINFO.TXT |- CUMINDEX.LBL | | | |- INDEX.LBL `- CUMINDEX.TAB | | | `- INDEX.TAB | | | | | `- [TDF] data directory (TDF and/or ODF; or ODR) | | | | | |- nnnnnnnn.TDF | | |- nnnnnnnn.LBL | | `- ... | |================================================================| 3.1.1 Root Directory The root directory contains the following files: AAREADME.TXT terse description of volume contents [2] ERRATA.TXT overview of anomalies and errors [2] VOLDESC.CAT volume object definition [2] 3.1.2 CALIB Directory If present, the CALIB directory contains Media Calibration Files, Timing and Polar Motion Files, DSN Weather Files, and/or other files which may be useful in analyzing and interpreting the primary data. Detached labels are not shown in the list below: CALINFO.TXT text description of the directory contents [2] nnnnnnnn.ION DSN Ionosphere Calibration Files [7] nnnnnnnn.TRO DSN Troposphere Calibration Files [7] nnnnnnnn.TIM Timing and Polar Motion Files [6] nnnnnnnn.WEA DSN Weather Data Files [8] LGA1_nnn.TAB Galileo LGA-1 antenna pattern tables 3.1.3 CATALOG Directory The CATALOG directory contains the following files: CATINFO.TXT text description of the directory contents [2] MISSION.CAT PDS catalog object for mission [2] INSTHOST.CAT PDS catalog object for instrument host [2] INST.CAT PDS catalog object for instrument [2] DATASET.CAT PDS catalog object for the data set [2] REF.CAT PDS catalog object for references [2] PERSON.CAT PDS catalog object for personnel [2] TARGET.CAT PDS catalog object for target [2] 3.1.4 DOCUMENT Directory The DOCUMENT directory contains some or all of the following files. When a data type is not included in the volume, the corresponding document may be omitted from the DOCUMENT directory. DOCINFO.TXT text description of the directory contents [2] GLLRSSIS.TXT this SIS document TK_DESCR.TXT Description of NAIF software TK_FTP.TXT Access information for NAIF software TK_INSTL.TXT Installation instructions for NAIF software TRK_2_18.TXT SIS for Orbit Data Files [5] TRK_2_21.TXT SIS for Timing and Polar Motion File [6] TRK_2_23.TXT SIS for Media Calibration Files [7] TRK_2_24.TXT SIS for DSN Weather Data File [8] TRK_2_25.TXT SIS for Archival Tracking Data File [9] RS11_10A.TXT SIS for Original Data Records, 1988 [10] RSC11_11.TXT SIS for Original Data Records, 1992 [11] HANDBOOK Subdirectory containing the Radio Science Handbook for this experiment POSTOPS Subdirectory containing the Post Operations Report for this experiment 3.1.5 GEOMETRY Directory The GEOMETRY directory, if present, contains files giving ephemerides of the spacecraft and solar system bodies. Files may include (detached PDS labels are not listed): GEOMINFO.TXT text description of the directory contents [2] nnnnnnnn.SPK spacecraft/planetary ephemeris NAIFnnnn.TLS NAIF leap second file PCKnnnnn.TPC NAIF planetary constants file nnnnnnnn.CRS Celestial Reference Set file 3.1.6 INDEX Directory The INDEX directory contains the following files: INDXINFO.TXT text description of the directory contents [2] INDEX.LBL PDS label for the volume index (INDEX.TAB); identifies the volume index and describes structure of the index table [2] INDEX.TAB volume index in tabular form [2] CUMINDEX.LBL PDS label for the cumulative volume index (CUMINDEX.TAB); identifies the cumulative volume index and describes structure of the cumulative index table [2] (omitted if only one volume in the data set) CUMINDEX.TAB cumulative volume index in tabular form [2] (omitted if only one volume in the data set) 3.1.7 Data Directories Each GLL RS RDA volume contains up to two data directories. If the ACRONYM_SEQUENCE (Section 2.3.1) is of the form GORS_0nnn, there must be either a TDF directory for Archival Tracking Data Files or an ODF directory for Orbit Data Files; there can be both. If ACRONYM_SEQUENCE is of the form GORS_1nnn, there will be an ODR directory for Original Data Records. 3.2 Formats The CD-WO conforms to the ISO 9660 level 1 Interchange Standard CD-WO format [1], which is compatible with common computer systems including MS-DOS, Macintosh, SunOS, and VMS. Data that comprise GLL RS RDA volumes are formatted in accordance with Planetary Data System specifications [2-4]. 3.3 File Naming Conventions In this document and on the discs themselves, file and directory names are in upper case characters. This ensures compatibility with operating systems in which these names are case insensitive (e.g., VMS and DOS) and operating systems in which names are automatically translated into one case or the other (e.g., Unix and MacOS). Within disc directories the characters ";1" are appended to all file names. VMS excepted, most operating systems will hide these suffixes from users. 3.3.1 PDS Labels All files contained on GLL RS RDA volumes are accompanied by PDS labels [2-4]. The label can either be prepended to the associated primary file or "detached", in which case the label becomes a file in its own right with the same name as the primary except for the suffix ".LBL". Detached label files are located in the same directory as the primary file. PDS labels, whether prepended to or detached from their primary file provide descriptive information about the associated file. The PDS label is an object-oriented structure consisting of sets of "keyword=value" declarations. The object to which the label refers (e.g. IMAGE, TABLE, etc.) is denoted by a statement of the form: ^object = location in which the carat character (^, also called a pointer in this context) indicates where to find the object. In a prepended label, the location is an integer representing the starting record or byte number of the object, where counting starts from record or byte number 1. In a detached label, the location denotes the name of the file containing the object, along with the starting record or byte number if there is more than one object. For example: ^HEADER = ("F01.IMG",1) ^IMAGE = ("F01.IMG",1025 ) indicates that the IMAGE object begins at byte 1025 of the file F01.IMG, in the same directory as the detached label file. Below is a list of the possible formats for the ^object definition. ^object = n ^object = n ^object = "filename.ext" ^object = ("filename.ext",n) ^object = ("filename.ext",n) where n is the starting record or byte number of the object, counting from the beginning of the file (record 1 or byte 1), indicates that the number given is in units of bytes; default is RECORDS filename is the (up to) 8 character, alphanumeric upper-case file name, ext is the 3 character upper-case file extension, All detached labels have record lengths of 80 bytes. Each record ends with a carriage return character (ASCII 13) in the next-to-last byte and a line feed character (ASCII 10) in the last byte. 3.3.2 Text Files Text files (.TXT suffix) may exist in the root, CALIB, CATALOG, DOCUMENT, GEOMETRY, and INDEX directories. These are ASCII files with attached PDS labels which employ the TEXT object. All records in text files have 80-bytes, with a carriage return character (ASCII 13) in the next-to-last byte and a line feed character (ASCII 10) in the last byte. 3.3.3 Tabular Files Tabular files (.TAB suffix) exist in the INDEX directory. All tabular files are filled with ASCII characters. Some are formatted for direct reading into database management systems; they consist of data "fields" separated by commas. Character fields are also enclosed in double quotation marks (") and are padded with spaces to keep quotation marks in the same columns of successive records. Character fields are left justified, and numeric fields are right justified. The "start byte" and "bytes" values listed in the labels do not include the commas between fields or the quotation marks surrounding character fields. The records in tabular files have fixed length, and the last two bytes of each record contain the ASCII carriage return and line feed characters. This allows a table to be treated as a fixed length record file on computers that support this file type and as a text file with embedded line delimiters on those that do not. All tabular files are accompanied by descriptive detached PDS labels. The PDS label has the same name as the data file it describes, except for the extension which is .LBL. For example, the file INDEX.TAB is accompanied by the detached label file INDEX.LBL in the INDEX directory. 3.3.4 Catalog files Catalog files (suffix .CAT) exist in the root and CATALOG directories. They are formatted in an object-oriented structure consisting of sets of "keyword=value" declarations. VOLDESC.CAT provides an overview of the contents of the volume. The files in the CATALOG directory provide a top-level understanding of the mission, the spacecraft, the ground system, and the data set [2]. 4 Detailed Interface Specifications 4.1 Logical Root Files 4.1.1 AAREADME.TXT File The AAREADME.TXT file contains terse volume content and format information. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. |================================================================| | | | Figure 4-1-1 Example Label for GLL RS RDA TXT Files | | | |================================================================| | | | PDS_VERSION_ID = PDS3 | | RECORD_TYPE = FIXED_LENGTH | | RECORD_BYTES = 80 | | OBJECT = TEXT | | PUBLICATION_DATE = 1994-01-25 | | NOTE = "Pre-launch description of science | | investigations, instruments, and | | experimental methods planned by | | the Galileo Radio Science Team." | | END_OBJECT = TEXT | |================================================================| Labeling requirements applicable to Figure 4-1-1 are described in [2]; keywords are defined in [3]. For this application, the only keywords that change are PUBLICATION_DATE the date in YYYY-MM-DD format on which the document was published or released (see Section 1.5.3). NOTE a brief description of the document, including a title if available. 4.1.2 ERRATA.TXT File ERRATA.TXT contains a cumulative listing of comments and updates concerning the CD-WO volumes in the data set as of the publication date. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. 4.1.3 VOLDESC.CAT File VOLDESC.CAT contains a description of the contents of the logical volume in a PDS format readable by both humans and computers. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage- return (ASCII 13) line-feed (ASCII 10) pair. An example VOLDESC.CAT file is shown in Figure 4-1-3. Keywords are defined below. |============================================================================| | | | Figure 4-1-3 Example VOLDESC.CAT File | | | |============================================================================| |PDS_VERSION_ID = PDS3 | |RECORD_TYPE = FIXED_LENGTH | |RECORD_BYTES = 80 | |OBJECT = VOLUME | | VOLUME_SERIES_NAME = "MISSION TO JUPITER" | | VOLUME_SET_NAME = "GALILEO: RAW RADIO SCIENCE DATA" | | VOLUME_SET_ID = USA_NASA_JPL_GORS_0xxx | | VOLUMES = "UNK" | | MEDIUM_TYPE = "CD-WO" | | VOLUME_FORMAT = "ISO-9660" | | VOLUME_NAME = "ATDF DATA: SWSE 1 1991-353 to 1992-045" | | VOLUME_ID = GORS_0003 | | VOLUME_VERSION_ID = "VERSION 1" | | PUBLICATION_DATE = 1997-04-23 | | DATA_SET_ID = "GO-SUN-RSS-1-TDF-V1.0" | | DESCRIPTION = "This volume contains Galileo raw radio | | tracking data and ancillary files from the | | first Solar Wind Scintillation Experiment." | | MISSION_NAME = "GALILEO" | | INSTRUMENT_HOST_NAME = "GALILEO ORBITER" | | SPACECRAFT_ID = GO | | OBJECT = DATA_PRODUCER | | INSTITUTION_NAME = "JET PROPULSION LABORATORY" | | FACILITY_NAME = "RADIO SCIENCE MISSION SUPPORT AREA" | | FULL_NAME = "RADIO SCIENCE SUPPORT TEAM" | | ADDRESS_TEXT = "BUILDING 264 - ROOM 325 | | JET PROPULSION LABORATORY | | 4800 OAK GROVE DRIVE | | PASADENA, CA 91109-8099" | | END_OBJECT = DATA_PRODUCER | | OBJECT = CATALOG | | ^MISSION_CATALOG = "MISSION.CAT" | | ^INSTRUMENT_HOST_CATALOG = "INSTHOST.CAT" | | ^INSTRUMENT_CATALOG = "INST.CAT" | | ^REFERENCE_CATALOG = "REF.CAT" | | ^PERSONNEL_CATALOG = "PERSON.CAT" | | ^DATA_SET_CATALOG = "DATASET.CAT" | | ^TARGET_CATALOG = "TARGET.CAT" | | END_OBJECT = CATALOG | |END_OBJECT = VOLUME | |END | |============================================================================| Keywords in the VOLDESC.CAT file are defined as follows. Where standard values have been assigned, those are indicated. PDS_VERSION_ID The version of PDS standards to which this volume adheres; set to "PDS3". RECORD_TYPE The record format of the file; set to "FIXED_LENGTH". RECORD_BYTES The number of bytes in each record; set to "80". VOLUME_SERIES_NAME The formal name that describes a broad categorization of data products; set to "MISSION TO JUPITER". VOLUME_SET_NAME The formal name describing one or more volumes containing a single data set or a collection of related data sets. VOLUME_SET_ID Identification of a data volume or a set of archival data volumes (see also VOLUME_ID below); set to: "USA_NASA_JPL_GORS_0xxx" for ATDF/ODF data "USA_NASA_JPL_GORS_1xxx" for ODR data VOLUMES The number of physical volumes in a volume set; May be set to "UNK" if the total number of volumes is not known in advance. MEDIUM_TYPE Identifies the physical storage medium; set to "CD-WO". VOLUME_FORMAT Identifies the logical format used in writing the data volume; set to "ISO-9660". VOLUME_NAME The formal name of the individual volume; a more specific identification than VOLUME_SET_NAME. For example: "ATDF DATA: SWSE1 1991-353 to 1992-005" "ODR DATA: SWSE1 1991-353 to 1991-362" VOLUME_ID A unique identifier for the volume; the last two components of the VOLUME_SET_ID, with place- holders filled in (see also Section 2.3.1). VOLUME_VERSION_ID The version of the data volume, starting with "1" for original versions and incrementing by 1 for each subsequent version. PUBLICATION_DATE The date in YYYY-MM-DD format on which the volume was published or released (see Section 1.5.3). DATA_SET_ID A unique alphanumeric identifier for the data set. Acceptable values are listed in Table 4-1-1. DESCRIPTION A brief text description of the contents of the volume. MISSION_NAME The planetary mission or project under which the data were acquired; set to "GALILEO". INSTRUMENT_HOST_NAME The full name of the spacecraft with which these data are associated; set to "GALILEO ORBITER". SPACECRAFT_ID Mnemonic uniquely associated with SPACECRAFT_NAME; set to "GO". |============================================================================| | | | Table 4-1-1 DATA_SET_ID Values | | | |============================================================================| | DATA_SET_ID |VOLUME_ID| DATA_SET_NAME | |-------------------- --+---------+-------------------------------------| |GO-SUN-RSS-1-TDF-V1.0 |GORS_00xx|GALILEO RADIO TRACKING SOLAR WIND | | | | SCINTILLATION DATA V1.0 | |----------------------------+---------+-------------------------------------| |GO-X-RSS-1-TDF-V1.0 |GORS_01xx|GALILEO RADIO TRACKING GRAVITATIONAL | | | | WAVE DATA V1.0 | |----------------------------+---------+-------------------------------------| |GO-J-RSS-1-TDF-V1.0 |GORS_02xx|GALILEO RADIO TRACKING JUPITER | | | | OCCULTATION DATA V1.0 | |----------------------------+---------+-------------------------------------| |GO-JS-RSS-1-TDF-V1.0 |GORS_03xx|GALILEO RADIO TRACKING JOVIAN | | | | SATELLITE OCCULTATION DATA V1.0 | |----------------------------+---------+-------------------------------------| |GO-J-RSS-1-TDF-V1.0 |GORS_04xx|GALILEO RADIO TRACKING DATA FOR | | | | JOVIAN EPHEMERIS IMPROVEMENT V1.0 | |----------------------------+---------+-------------------------------------| |GO-JG-RSS-1-TDF-V1.0 |GORS_05xx|GALILEO RADIO TRACKING DATA FOR | | | | JOVIAN GRAVITY FIELD V1.0 | |----------------------------+---------+-------------------------------------| |GO-SS-RSS-1-TDF-V1.0 |GORS_06xx|GALILEO RADIO TRACKING DATA FOR | | | | REDSHIFT OBSERVATIONS V1.0 | |----------------------------+---------+-------------------------------------| |GO-SS-RSS-1-TDF-V1.0 |GORS_07xx|GALILEO RADIO TRACKING DATA FOR | | | | EARTH 1 AND 2 OBSERVATIONS V1.0 | |----------------------------+---------+-------------------------------------| |GO-V-RSS-1-TDF-V1.0 |GORS_08xx|GALILEO VENUS RANGE FIX RAW DATA V1.0| |----------------------------+---------+-------------------------------------| |GO-SUN-RSS-1-ODR-V1.0 |GORS_10xx|GALILEO RAW OLR SOLAR CONJUNCTION | | | | DATA V1.0 | |----------------------------+---------+-------------------------------------| |GO-X-RSS-1-ODR-V1.0 |GORS_11xx|GALILEO RAW OLR GRAVITATIONAL WAVE | | | | SEARCH DATA V1.0 | |----------------------------+---------+-------------------------------------| |GO-J-RSS-1-ODR-V1.0 |GORS_12xx|GALILEO RAW OLR JUPITER OCCULTATION | | | | DATA V1.0 | |----------------------------+---------+-------------------------------------| |GO-JS-RSS-1-ODR-V1.0 |GORS_13xx|GALILEO RAW OLR JOVIAN SATELLITE | | | | OCCULATION DATA V1.0 | |============================================================================| INSTITUTION_NAME The name of the institution under which this volume was produced. FACILITY_NAME The name of the department, laboratory, or under which the volume was produced. FULL_NAME The name of the individual or organization responsible for producing this volume. ADDRESS_TEXT Mailing address for the individual or organization responsible for producing this volume. ^MISSION_CATALOG File name in the CATALOG directory under which the PDS mission catalog file is stored. ^INSTRUMENT_HOST_CATALOG File name in the CATALOG directory under which the PDS instrument host catalog file is stored. ^INSTRUMENT_CATALOG File name in the CATALOG directory under which the PDS instrument catalog file is stored. ^REFERENCE_CATALOG File name in the CATALOG directory under which the PDS reference catalog file is stored. ^PERSONNEL_CATALOG File name in the CATALOG directory under which the PDS personnel catalog file is stored. ^DATA_SET_CATALOG File name in the CATALOG directory under which the PDS data set catalog file is stored. ^TARGET_CATALOG File name in the CATALOG directory under which the PDS target catalog file is stored (this pointer and the target catalog file itself may not appear on all volumes). 4.2 Static Directories Static directories are those which do not change (or change very little) from one volume to another. Keywords are defined in [3]. 4.2.1 CALIB Directory The CALIB directory contains files used in calibrating the data. Included are DSN files which give estimates of ionospheric and tropospheric perturbations on radio propagation at Earth receiving sites and estimates of changes in Earth rotational angular momentum. If no calibration files are included on a volume, both the CALINFO.TXT file and the CALIB directory will be omitted from the volume. 4.2.1.1 CALINFO.TXT File The CALINFO.TXT file contains a description of the contents of the CALIB directory. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. 4.2.1.2 DSN Ionosphere Calibration File DSN Ionosphere Calibration Files are ASCII files of card-image command-like notations and numerical data. The file name has the form mmmmmmmm.ION; the detached minimal PDS label has file name mmmmmmmm.LBL. Record lengths are variable. Records as delivered by the DSN have been modified only by conversion of existing line delimiters to carriage-return (ASCII 13) line-feed (ASCII 10) pairs; users may have to make another conversion before using these files on a local system. The format and content of each DSN Ionosphere Calibration file (aside from the delimiter modification) is described by file TRK_2_23.TXT in the DOCUMENT directory. 4.2.1.3 DSN Troposphere Calibration File DSN Troposphere Calibration Files are ASCII files of card-image command-like notations and numerical data. The file name has the form mmmmmmmm.TRO; the detached minimal PDS label has file name mmmmmmmm.LBL. Record lengths are variable. Records as delivered by the DSN have been modified only by conversion of existing line delimiters to carriage-return (ASCII 13) line-feed (ASCII 10) pairs; users may have to make another conversion before using these files on a local system. The format and content of each DSN Troposphere Calibration file (aside from the delimiter modification) is described by file TRK_2_23.TXT in the DOCUMENT directory. 4.2.1.4 DSN Timing and Polar Motion File DSN Timing and Polar Motion Files are ASCII files. The file name has the form mmmmmmmm.TIM; the detached minimal PDS label has file name mmmmmmmm.LBL. Record lengths are variable. Records as delivered by the DSN have been modified only by conversion of existing line delimiters to carriage-return (ASCII 13) line-feed (ASCII 10) pairs; users may have to make another conversion before using these files on a local system. The format and content of each DSN Timing and Polar Motion file (aside from the delimiter modification) is described by file TRK_2_21.TXT in the DOCUMENT directory. 4.2.1.5 DSN Weather Data File DSN Weather Data Files are ASCII files. The file name has the form mmmmmmmm.WEA; the detached minimal PDS label has file name mmmmmmmm.LBL. Record lengths are variable. Records as delivered by the DSN have been modified only by conversion of existing line delimiters to carriage-return (ASCII 13) line-feed (ASCII 10) pairs; users may have to make another conversion before using these files on a local system. The format and content of each DSN Weather Data file (aside from the delimiter modification) is described by file TRK_2_24.TXT in the DOCUMENT directory. 4.2.1.6 Galileo LGA Beam Pattern Tables The Galileo Low-Gain Antenna (LGA) beam patterns are provided in two tabular files. One (LGA1_DL.TAB) is for the downlink antenna pattern. The other (LGA1_UL.TAB) contains the uplink antenna pattern information. Detached labels describe the files in more detail. 4.2.2 CATALOG Directory The CATALOG directory contains files used in cataloging the data, including files which provide high-level descriptions of the planetary mission, spacecraft, instrument, and data set. PDS "streamlined" formats are used [2]. 4.2.2.1 CATINFO.TXT File The CATINFO.TXT file contains a description of the contents of the CATALOG directory. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. 4.2.2.2 MISSION.CAT File The MISSION.CAT file contains a PDS high-level description and catalog information about the Galileo mission and spacecraft [2]. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. 4.2.2.3 INSTHOST.CAT File The INSTHOST.CAT file contains a PDS high-level description and catalog information about the spacecraft and ground system [2]. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. 4.2.2.4 INST.CAT File The INST.CAT file contains a PDS high-level description and catalog information about the spacecraft and ground elements of the radio system [2]. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. 4.2.2.5 REF.CAT File The REF.CAT file contains a PDS high-level list and catalog information about references describing the mission, spacecraft, and radio system [2]. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. 4.2.2.6 PERSON.CAT File The PERSON.CAT file contains a PDS high-level list and catalog information about personnel involved in creating the logical volume [2]. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. 4.2.2.7 DATASET.CAT File The DATASET.CAT file contains a PDS high-level description and catalog information about the data set on this archive volume. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. 4.2.2.8 TARGET.CAT File The TARGET.CAT file contains a PDS high-level description and catalog information about the target of this data set. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. 4.2.3 DOCUMENT Directory The DOCUMENT directory contains files which describe the data included in the GLL RS RDA volume. 4.2.3.1 DOCINFO.TXT File The DOCINFO.TXT file contains a description of the contents of this directory. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. 4.2.3.2 GLLRSSIS.TXT File The GLLRSSIS.TXT file is the Galileo Radio Science Raw Data Archive Software Interface Specification (this document). This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. 4.2.3.3 TRK_2_18.TXT File The TRK_2_18.TXT file is the DSN Orbit Data File interface description. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. This file documents the structure and content of data files archived in the ODF directory of the GLL RS RDA volume; if the ODF directory is not present, the TRK_2_18.TXT file may be omitted. 4.2.3.4 TRK_2_21.TXT File The TRK_2_21.TXT file is the DSN Timing and Polar Motion interface description. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. This file documents the structure and content of DSN Timing and Polar Motion Files archived in the CALIB directory of the GLL RS RDA logical volume; if no Timing and Polar Motion Files are included in the CALIB directory of the volume, the TRK_2_21.TXT file may be omitted. 4.2.3.5 TRK_2_23.TXT File The TRK_2_23.TXT file is the DSN Media Calibration File interface description. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. This file documents the structure and content of Ionosphere and Troposphere Media Calibration Files archived in the CALIB directory of the GLL RS RDA volume. If no media calibration files are included in the CALIB directory of the volume, the TRK_2_23.TXT file may be omitted. 4.2.3.6 TRK_2_24.TXT File The TRK_2_24.TXT file is the DSN Weather Data File Interface description. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. This file documents the structure and content of DSN Weather Data Files archived in the CALIB directory of the GLL RS RDA volume. If no DSN Weather Data Files are included in the CALIB directory of the volume, the TRK_2_24.TXT file may be omitted. 4.2.3.7 TRK_2_25.TXT File The TRK_2_25.TXT file is the DSN Archival Tracking Data File interface description. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. This file documents the structure and content of Archival Tracking Data Files stored in the TDF directory of the GLL RS RDA volume. If no ATDFs are included in the volume, the TRK_2_25.TXT file may be omitted. 4.2.3.8 NAIF Toolkit Documentation TK_FTP.TXT is an explanation for obtaining NAIF Toolkit software and documentation from on-line servers; TK_DESCR.TXT and TK_INSTL.TXT describe the Toolkit and explain its installation, respectively. Each of these three files is an ASCII file with line lengths of 80 characters. Each line is terminated by a carriage return (ASCII 13) character in the next-to-last position and a line-feed (ASCII 10) character in the last position. 4.2.3.9 HANDBOOK Files HANDBOOK files are a collection of ASCII and TIFF files which make up a PDS document describing the objectives and procedures in collecting the data in the archival volume. These are electronic files obtained by scanning and converting graphics and text. The document is described by a single PDS label with a name of the form HANDBKn.LBL. The label then points to the ASCII and TIFF files which make up the rest of the document. The label itself is an ASCII file with line lengths of 80 characters. Each line is terminated by a carriage return (ASCII 13) character in the next-to-last position and a line-feed (ASCII 10) character in the last position. In some volumes the HANDBOOK files are stored within a subdirectory having the name HANDBOOK. 4.2.3.10 POSTOPS Subdirectory The POSTOPS subdirectory contains TIF files which make up a document called the Post Ops Report. This document contains a page for every day of the experiment. Each page is a graphical representation of the important events of the day which may have affected the data. Examples of such events include spacecraft motion, DSN equipment failures, and tracking station coverage. 4.3 GEOMETRY Directory The GEOMETRY directory is optional. If present, it contains data for determining the position and attitude of the spacecraft relative other solar system bodies. If no geometry data files exist, both the GEOMINFO.TXT file and the GEOMETRY directory itself will be omitted from the volume. 4.3.1 GEOMINFO.TXT File The GEOMINFO.TXT file contains a description of the contents of the GEOMETRY directory. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. 4.3.2 SPK Files SPK files are SPICE kernels containing spacecraft ephemerides. SPK file names are of the form SyymmddA.XSP. S represents the type of kernel (SPK). The digits following the "S" represent the two-digit year, two-digit month, and two-digit day on which the file starts. The XSP extension signifies that the file is in transfer format. Detached PDS labels with names of the form SyymmddA.LBL accompany each SP kernel file. Routines within the NAIF Toolkit, described in the DOCUMENT directory, may be used to read, interpret, and use the data in the SPK file. 4.4 INDEX Directory 4.4.1 INDXINFO.TXT File The INDXINFO.TXT file contains a description of the contents of the INDEX directory. This is an ASCII file with record lengths of 80 bytes. Each line is terminated with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The file has an attached PDS label of the form shown in Figure 4-1-1. 4.4.2 INDEX.LBL File INDEX.LBL is a detached label that completely describes INDEX.TAB. Each record in INDEX.LBL contains 80 bytes. Each record ends with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. 4.4.3 INDEX.TAB File INDEX.TAB is a table listing all GLL RS RDA data files included in this volume. It is an ASCII file with fixed-length records. Each record is delimited by a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The detailed format and content are described by INDEX.LBL. 4.4.4 CUMINDEX.LBL File CUMINDEX.LBL is a detached label that completely describes CUMINDEX.TAB. Each record in CUMINDEX.LBL contains 80 bytes. Each record ends with a carriage-return (ASCII 13) line-feed (ASCII 10) pair. CUMINDEX.LBL may be omitted if the data set fits on a single volume. 4.4.5 CUMINDEX.TAB File CUMINDEX.TAB is a table listing all GLL RS RDA data files included in this volume. It is an ASCII file with fixed-length records. Each record is delimited by a carriage-return (ASCII 13) line-feed (ASCII 10) pair. The detailed format and content are described by INDEX.LBL. CUMINDEX.TAB may be omitted if the data set fits on a single volume. 4.5 Data Directories Each GLL RS RDA volume has either one or two data directories. If the volume contains radio tracking data, there can be a TDF directory holding ATDF files, or an ODF directory holding ODF files, or both. If the volume contains ODR data, there will be a single data directory -- the ODR directory (see Section 3.1.7 and Table 4-1-3). 4.5.1 TDF Directory The TDF directory holds Archival Tracking Data Files. Each ATDF is accompanied by a full PDS label, which describes both its format and content. The ATDF file name is of the form ydddeeeC.TDF, where y is the least significant digit of the year, ddd is the three-digit day of year for start of data, eee is the three-digit day of year for end of data, and C is a single character (starting from "A") that is used to distinguish among two or more ATDFs with the same first 7 characters. The TRK_2_25.TXT file in the DOCUMENT directory also describes the ATDF format. 4.5.2 ODF Directory The ODF directory holds Orbit Data Files. Each ODF is accompanied by a full PDS label, which describes both its format and content. The ODF file name is of the form ydddeeeC.ODF, where y is the least significant digit of the year, ddd is the three-digit day of year for start of data, eee is the three-digit day of year for end of data, and C is a single character (starting from "A") that is used to distinguish among two or more ODFs with the same first 7 characters. The TRK_2_18.TXT file in the DOCUMENT directory also describes the ODF format. 4.5.3 ODR Directory The ODR directory holds Original Data Records. Each ODR is accompanied by a full PDS label, which describes both its format and content. The ODR file name is of the form ydddhhmm.ODR, where y is the least significant digit of the year, ddd is the three-digit day of year for start of data, hh is the hour for start of data, and mm is the minute for start of data. The RSC11_11.TXT file in the DOCUMENT directory also describes the ODR format. 5 Support Staff and Cognizant Personnel The following persons may be contacted for information. Planetary Data System Radio Science Advisor: Richard A. Simpson Packard Building - Room 332 Center for Radar Astronomy Stanford University Stanford, CA 94305-9515 Phone: 650-723-3525 FAX: 650-723-9251 Electronic mail: rsimpson@magellan.stanford.edu Galileo Radio Science Support Team: Randy G. Herrera MS 264-860 Jet Propulsion Laboratory 4800 Oak Grove Drive Pasadena, CA 91109-8099 Phone: 818-393-0664 FAX: 818-393-9282 Electronic Mail: rgh@godzilla.jpl.nasa.gov Trish Priest MS 264-860 Jet Propulsion Laboratory 4800 Oak Grove Drive Pasadena, CA 91109-8099 Phone: 818-393-0661 FAX: 818-393-9282 Electronic Mail: Patricia.Priest@jpl.nasa.gov Planetary Data System: PDS Operator MS 202-101 Jet Propulsion Laboratory 4800 Oak Grove Drive Pasadena, CA 91109-8099 Phone: 818-354-4321 Electronic mail: pds_operator@jplpds.jpl.nasa.gov