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PDS_VERSION_ID        = PDS3                                                   RECORD_TYPE           = STREAM                                                 OBJECT                = TEXT                                                     PUBLICATION_DATE      = 2001-08-31                                             NOTE                        = "Instructions for obtaining NAIF                                                Toolkit software via Internet.                                                 Points to documentation on                                                     Toolkit organization and use.                                                  Compiled from notes                                                            provided by Hester Neilan.                                                                                                                                    Instructions updated by E. A.                                                  Jensen"                                       END_OBJECT            = TEXT                                                   END                                                                                                                                                                                                                                                 Instructions for Obtaining the NAIF Toolkit                                                                                                                                                                                           The NAIF Toolkit provides access to SPICE files.  Files include                spacecraft and planetary ephemerides (SPK files), instrument mounting          information (IK files), attitude data for spacecraft (CK files),               and histories of events (EK files).                                                                                                                           Documentation which accompanies the Toolkit describes formats of the           files.  In the DOCUMENT directory of this archive volume see also              TK_DESCR.TXT and TK_INSTL.TXT, short descriptions of the Toolkit               organization and installation.                                                                                                                                To obtain the toolkit by anonymous FTP, contact NAIF personnel for             instructions.                                                                                                                                                 http://pds.jpl.nasa.gov/naifcont.html                                                                                                                         CONTACTING NAIF                                                                                                                                                                                                                                                                                                             Charles Acton, NAIF Node Manager                                                                                                                                              Charles.Acton@jpl.nasa.gov or                                                  cacton@spice.jpl.nasa.gov                                                      Phone (818) 354-3869                                                           Fax (818) 393-6388                                                                                                                            Nat Bachman:         nbachman@spice.jpl.nasa.gov                               Bill Taber:               btaber@spice.jpl.nasa.gov                            Boris Semenov:       bsemenov@spice.jpl.nasa.gov                               Jeff Bytof:               jbytof@spice.jpl.nasa.gov                            Ed Wright:              ewright@spice.jpl.nasa.gov                                                                                                            Mail Stop 301-125L                                                             Jet Propulsion Laboratory                                                      Pasadena, California 91109-8099                                                USA                                                                                                                                                                                                                                          http://pds.jpl.nasa.gov/naif.html                                                                                                                             Navigation and Ancillary Information Facility (NAIF)                                                                                                          The Navigation and Ancillary Information Facility (NAIF) Node                  of the Planetary Data System is responsible for the design,                    implementation and operation of the SPICE information system                   --a means for providing ancillary observation geometry data                    and related tools used in the planning and interpretation of                   science instrument observations returned from planetary spacecraft.                                                                                           The SPICE acronym comes from:                                                              S - Spacecraft                                                                 P - Planet                                                                     I - Instrument                                                                 C - "C-matrix"                                                                 E - Events                                                                                                                                        SPICE data files, called kernels, exist for spacecraft trajectory              (S), planet, satellite, comet and asteroid ephemerides and                     associated physical and cartographic constants (P), instrument                 information, including mounting alignment and other relevant                   geometric information (I), orientation of spacecraft structures                upon which science instruments are mounted (C); and spacecraft                 and ground data system events, both planned and unplanned (E).                                                                                                The PDS NAIF node provides SPICE users a portable ANSI FORTRAN 77              or ANSI C toolkit that contains readers subroutines                            for retrieving data from each of the SPICE kernels, plus a wide                assortment of geometry, math, and utility modules useful in                    computing instrument observation geometry parameters: examples                 are range, optic axis intercept latitude and longitude, and                    phase, incidence, and emission angles. The SPICE toolkit also                  includes utility and demonstration programs, and is accompanied by             extensive user-focused documentation.                                                                                                                         The NAIF node is responsible for archiving and distributing SPICE              kernel files produced by NASA's planetary flight projects.                     NAIF also assembles and distributes generic planet, satellite, comet,          and asteroid ephemeris files in SPICE format used for a wide                   assortment of mission evaluation, observation planning and data                analysis tasks. These generic ephemeris files are based on                     products provided by JPL's Solar System Dynamics Group.                                                                                                       While NASA's planetary missions were the original focus of SPICE               development, today the system is being used, or considered for                 use, on flight projects in other disciplines (astrophysics, space              physics and Earth science) and in other countries.                                                                                                            The ephemeris component of SPICE (called SPK files) is becoming the            official mechanism for providing NASA's Deep Space                             Network with predictive orbit data needed to schedule tracking                 time and to operate the DSN antennas during tracking sessions.                                                                                                NAIF's products are freely available to U.S. scientists and                    engineers participating in the flight projects and other activities of         NASA. Non-U.S. scientists and engineers (except those in countries             subject to U.S. State Department restrictions) are similarly                   invited to utilize SPICE components that have been published                   for general consumption.                                                                                                                                      Potential users are advised that programming and science/math                  skills at a college level are generally needed to utilize SPICE                products. Users must have a computer with 25-50 Mbytes of disk                 space, 16 Mbytes of available RAM and a compiler or 4th                        generation language that can link to either FORTRAN or C routines.             (Resource requirements may vary from platform to                               platform, and depending on the user's application.) Internet ftp               capability is usually needed to obtain the necessary SPICE                     components.