SPICE Production at ESTEC April 2005

SPICE Production at ESTEC 2 Overview SPK/CK production SCLK production FK and IKs production Other Kernels

SPICE Production at ESTEC 3 ESTECJPL ESOC PI Teams SOC SCI-SB Support DDS Request And Receive System Auxiliary Data Conversion System (ADCS) Orbit and Attitude File FD & FCT DDID FTP server Time Correlation Packets Solar Array Gimbals' Data SCLK Spacecraft SPK and CK Solar Array CK SPICE Kernel Delivery Notification SPICE Kernels NAIF SPICE Support SPICE Toolkit FK and IK Production Mirroring of Generic SPICE Kernels FK and IK LSK, PCK, etc. FK & IK Support Generic Kernels FK & IK Support FTP server SPICE Tools Mirroring of ESTEC SPICE Kernels to NAIF FTP Server

SPICE Production at ESTEC 4 SPK/CK production Spacecraft SPK and CK files are created from ESOC/FD Orbit and Attitude files using ADCS: –Conversion is automated –ADCS also validates the conversion process. –ADCS converts only the format of the data, but the data themselves remain unchanged. –All ESA planetary missions’ SPKs and CKs are generated with the same system. Solar Array CK files are produced from telemetry on request from the Teams (already foreseen production for Mars Express and SMART-1) ESA Ground Stations SPK files will be produced in the near future.

SPICE Production at ESTEC 5 SCLK production SCLK files are created from: –Time Correlation Coefficient Packets for Mars Express and Rosetta. –Time Correlation Packets for SMART-1 (not yet implemented) –Venus Express SCLK source TBC. Fake SCLK files have been produced for SMART-1 and VEX and shall be used until a real SCLK file is provided (only for study purposes). Special SCLK files might be required for SMART-1 instruments AMIE and SPEDE.

SPICE Production at ESTEC 6 FK and IK production SOC/MissionFK/IK Supported by PST/MEXNAIF and Instrument Teams RSOC/RosettaNAIF and Instrument Teams STOC/SMART-1Instrument Teams (no official support from NAIF) VSOC/VEXInstrument Teams (pending support from NAIF) The Production of the Frames Kernels and Instrument Kernels for each mission is responsibility of the corresponding SOC. Instrument Teams and NAIF support the SOCs in the production of the Frames Kernels and Instrument Kernels:

SPICE Production at ESTEC 7 Other kernels All the other kernels that complete the Mars Express/Rosetta/SMART-1/Venus Express SPICE data set are obtained from NAIF, where they are produced. These kernels are: –SPKs: Planetary Ephemeris and DSN stations. –FK: DSN stations. –PCK: Planetary Constants. Generic Text PCK for all bodies High Precision Earth rotation binary PCK Moon rotation binary PCK Text PCKs for Rosetta targets –LSK: Leap-seconds and Time conversion constants. –Plate Model Kernels for asteroids and comet.

SPICE Production at ESTEC 8 SPICE Kernel Distribution SPICE kernels are available in the ESTEC FTP server: MEX: ftp://gorilla.estec.esa.int/pub/projects/MEX/data/spice/kernelsftp://gorilla.estec.esa.int/pub/projects/MEX/data/spice/kernels Rosetta: ftp://gorilla.estec.esa.int/pub/projects/rosetta/data/spice/kernelsftp://gorilla.estec.esa.int/pub/projects/rosetta/data/spice/kernels SMART-1: ftp://gorilla.estec.esa.int/pub/projects/Smart-1/data/spice/kernelsftp://gorilla.estec.esa.int/pub/projects/Smart-1/data/spice/kernels VEX: ftp://gorilla.estec.esa.int/pub/projects/VEX/data/spice/kernelsftp://gorilla.estec.esa.int/pub/projects/VEX/data/spice/kernels SPICE kernels are also available in the NAIF FTP server for the following missions (ESTEC server is mirrored): MEX: ftp://naif.jpl.nasa.gov/pub/naif/MEX/kernelsftp://naif.jpl.nasa.gov/pub/naif/MEX/kernels Rosetta: ftp://naif.jpl.nasa.gov/pub/naif/ROSETTA/kernelsftp://naif.jpl.nasa.gov/pub/naif/ROSETTA/kernels VEX: TBD

SPICE Production at ESTEC 9 SPICE and PDS/PSA Archive SPICE Data Sets for all ESA planetary missions will be archived within the PSA using PDS Standards. SPICE Data Sets will be accessible through the PSA web interface ( Additionally, the working repository will be kept available (see previous slide) For archival purposes, filenames might be changed; nevertheless, information about the original filenames will be available for trace-back purposes. SPICE to Archive Interface Control Documents will be available for all ESA missions and accessible through the PSA.