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Stanford Center for Radar Astronomy
Software Interface Specification
Galileo Radio Science Raw Data Archive
prepared by
Patricia Priest
Jet Propulsion Laboratory
4800 Oak Grove Drive
Pasadena, CA 91109-8099
Version 0.2
23 April 1997
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 |Editted by T. Priest to reflect |
| | | | organizational changes and to |
| | | | fill in some TBD items. |
|================================================================|
|================================================================|
| |
| ITEMS TO BE DETERMINED |
| |
|================================================================|
| REVISION | SECTION | ITEM DESCRIPTION | RESOLUTION |
| NUMBER | AFFECTED | | |
|----------+----------+------------------------+-----------------|
| 0.1 | 1.3 |Add GIN file (if it will| |
| | Fig 3-1 |be used); also CSP, EOP,| |
| | 3.1.2 |and NAV constants file. | |
| | 3.3.3(?) | | |
| | 4.2.1.5 | | |
|----------+----------+------------------------+-----------------|
| 0.1 | 3.1.2 |EOP, CSP, GIN and | |
| | 3.1.4 |NAV constants files and | |
| | |SISs. | |
|----------+----------+------------------------+-----------------|
| 0.1 | 3.1.5 |double check list of | |
| | |NAIF files | |
|----------+----------+------------------------+-----------------|
| |4.2.1.5 - |Add more paragraphs, as | |
| | 4.2.1.8|needed | |
|----------+----------+------------------------+-----------------|
| 0.1 | 4.2.3.9 |More SIS documents? | |
|----------+----------+------------------------+-----------------|
| 0.1 | 4.3.2+ |Add secs for NAIF files | |
|================================================================|
Distribution
PDS/JPL
Y. Oliver.............171/264 yolanda.oliver@jpl.nasangov
T.L. Brown..............171/264 tyler.l.brown@jpl.nasa.gov
V. Henderson..........171/264 valerie.henderson@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. Simpson.........Durand 232 rsimpson@magellan.stanford.edu
L. Tyler...........Durand 232 len@nova.stanford.edu
D.P. Hinson..........Durand 232 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 aliore@qmail.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 paetzoldt@geo.uni-koeln.de
Contents
Preface.....................................................................ii
Document Change Log.........................................................ii
Items to be Determined.....................................................iii
Distribution................................................................iv
Contents.....................................................................v
Acronyms and Abbreviations.................................................vii
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......................1
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........................................................3
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.......................................................7
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..................................16
4.2.1.4 DSN Timing and Polar Motion Files..................................17
4.2.1.5 DSN Weather Data Files.............................................17
4.2.1.6 Earth Orientation Parameter Files..................................17
4.2.1.7 CSP Data...........................................................17
4.2.1.8 GIN Files..........................................................17
4.2.1.9 Navigation Constants Files.........................................17
4.2.1.10 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
4.2.3 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
4-1-2 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 over 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 are organized into separate 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, or occultations. Within a data set, the ATDFs
are organized chronologically. Each ATDF 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" 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
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 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. ATDF and 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 |
| | |- HANDBOOK `- TK_INSTL.TXT `- ... |
| | |- POSTOPS |
| | `- ... |
| | |
| |- [GEOMETRY] |
| | | |
| | |- GEOMINFO.TXT |
| | `- ... |
| | |
| |- [INDEX] |
| | | |
| | |- INDXINFO.TXT |
| | |- INDEX.LBL |
| | |- INDEX.TAB |
| | |- CUMINDEX.LBL |
| | `- CUMINDEX.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]
nnnnnnnn.EOP Earth Orientation Parameter Files [***TBD***]
nnnnnnnn.CSP ************** [***TBD***]
nnnnnnnn.GIN GIN Files [***TBD***]
nnnnnnnn.NVC Navigation Constant Files [***TBD***]
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 data set catalog object for mission [2]
INSTHOST.CAT PDS data set catalog object for instrument host [2]
INST.CAT PDS data set catalog object for instrument [2]
DATASET.CAT PDS data set catalog object for the data set [2]
REF.CAT PDS data set catalog object for references [2]
PERSON.CAT PDS data set catalog object for personnel [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]
*****TBD**** SIS for EOP [***TBD***]
*****TBD**** SIS for CSP data [***TBD***]
*****TBD**** SIS for Navigation Constants Files [***TBD***]
*****TBD**** SIS for GIN Files [***TBD***]
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]
CUMINDEX.TAB cumulative volume index in tabular form [2]
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 ❮BYTES❯)
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❮BYTES❯
^object = "filename.ext"
^object = ("filename.ext",n)
^object = ("filename.ext",n❮BYTES❯)
where
n is the starting record or byte number of the object, counting
from the beginning of the file (record 1 or byte 1),
❮BYTES❯ 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 4-1-2. Keywords are defined below.
|============================================================================|
| |
| Figure 4-1-2 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: ATDF 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 track- |
| ing data and ancillary files from the first |
| Solar Wind Scintillation Experiment." |
| MISSION_NAME = "GALILEO" |
| SPACECRAFT_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" |
| 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. Acceptable values include:
"GALILEO: ATDF RADIO SCIENCE DATA"
"GALILEO: ODR RADIO SCIENCE DATA"
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; set to "UNK" because 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.
Acceptable values include:
"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.
|============================================================================|
| |
| 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-JE-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-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 |
|============================================================================|
MISSION_NAME The planetary mission or project under which the
data were acquired; set to "GALILEO".
SPACECRAFT_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".
INSTITUTION_NAME The name of the institution under which this volume
was produced; set to "JET PROPULSION LABORATORY".
FACILITY_NAME The name of the department, laboratory, or
under which the volume was produced; set to
"RADIO SCIENCE MISSION SUPPORT AREA".
FULL_NAME The name of the individual or organization
responsible for producing this volume; set to
"RADIO SCIENCE SUPPORT TEAM".
ADDRESS_TEXT Mailing address for the individual or organization
responsible for producing this volume; set to:
"BUILDING 264 - ROOM 325
JET PROPULSION LABORATORY
4800 OAK GROVE DRIVE
PASADENA, CA 91109-8099".
^MISSION_CATALOG File name in the CATALOG directory under which
the PDS streamlined mission catalog file is
stored; set to "MISSION.CAT".
^INSTRUMENT_HOST_CATALOG File name in the CATALOG directory under which
the PDS streamlined instrument host catalog file
is stored; set to "INSTHOST.CAT".
^INSTRUMENT_CATALOG File name in the CATALOG directory under which
the PDS streamlined instrument catalog file
is stored; set to "INST.CAT".
^REFERENCE_CATALOG File name in the CATALOG directory under which
the PDS streamlined reference catalog file
is stored; set to "REF.CAT".
^PERSONNEL_CATALOG File name in the CATALOG directory under which
the PDS streamlined personnel catalog file
is stored; set to "PERSON.CAT".
^DATA_SET_CATALOG File name in the CATALOG directory under which
the PDS streamlined data set catalog file
is stored; set to "DATASET.CAT".
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 Earth Orientation Parameter File
4.2.1.7 CSP Data
4.2.1.8 GIN File
4.2.1.9 Navigation Constants File
4.2.1.10 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.
4.2.3 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 Subdirectory
The HANDBOOK subdirectory contains a combination of ASCII and TIF
files which make up the Radio Science Handbook for the experiment archived
on this volume. The Radio Science Handbook contains an overview of the
experiment, the equipment, and the procedures used to obtain the data.
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.
4.2.3.11 *****More SIS documents for EOP, GIN, CSP, NAV Consts??******
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.
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.
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
Durand Building - Room 232
Center for Radar Astronomy
Stanford University
Stanford, CA 94305-9515
Phone: 415-723-3525
FAX: 415-723-9251
Electronic mail: rsimpson@magellan.stanford.edu
Galileo Radio Science Support Team:
Randy G. Herrera
MS 264-325
Jet Propulsion Laboratory
4800 Oak Grove Drive
Pasadena, CA 91109
Phone: 818-393-0664
FAX: 818-393-9282
Electronic Mail: rgh@godzilla.jpl.nasa.gov
Trish Priest
MS 264-325
Jet Propulsion Laboratory
4800 Oak Grove Drive
Pasadena, CA 91109
Phone: 818-393-0661
FAX: 818-393-9282
Electronic Mail: Patricia.Priest@jpl.nasa.gov
Planetary Data System:
PDS Operator
MS 525/389
Jet Propulsion Laboratory
4800 Oak Grove Drive
Pasadena, CA 91109
Phone: 818-306-6130
Electronic mail: pds_operator@jplpds.jpl.nasa.gov
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