PDS_VERSION_ID = PDS3
RECORD_TYPE = STREAM
OBJECT = TEXT
INTERCHANGE_FORMAT = ASCII
PUBLICATION_DATE = 2000-01-04
NOTE = "I-Kernel Information"
END_OBJECT = TEXT
END
General information about SPICE I-kernels
=========================================
In the SPICE system, I-kernels describe how an instrument is mounted
to the instrument platform. I-kernels may also contain instrument
field-of-view specifications, principal axes specifications, etc.
The I-kernel mounting alignment, platform orientation, along with
knowledge of the spacecraft position (SP kernel) and instrument
pointing (C kernel), allows the user to use SPICELIB to calculate
the pointing of instruments. The data contained in I-kernel files
can be accessed and manipulated by a collection of FORTRAN 77
subroutines which are part of the SPICELIB library. It is used in
conjunction with other data. The SPICELIB subroutines can be
integrated into user application programs. The SPICE system toolkit
for a number of computer platforms or information regarding how it
can be obtained is located in the SOFTWARE subdirectory of the main
directory of this dataset.
Refer to the KERNEL.REQ document provided with the toolkit or
available from the NAIF Node of PDS if SPICE toolkit is not included
with this data set to get more information on how to access I-kernel
data.
MGS I-kernels provided on this volume
=====================================
The following MGS I-Kernel files are provided on this volume (only
name portion of the file name is shown on the right; the extension of
all file names is ".TI"):
MGS_MAGER_V12 Magnetometer/Electron-Reflectometer (MAG/ER) IK
file containing instrument mounting alignment
and geometry parameters. This file also contains
all MAG/ER and some MGS Solar Array Frame
definitions;
MGS_MHSA_V23 Mars Horizon Sensor Assembly (MHSA) IK file
containing instrument mounting alignment and
individual sensor geometry parameters. This file
also contains MHSA Frame definitions;
MGS_MOC_V13 Mars Orbiter Camera (MOC) IK file containing
instrument mounting alignment, FOV and optics
geometry parameters. This file also contains MOC
Frame definitions;
MGS_MOLA_V22 Mars Orbiter Laser Altimeter (MOLA) IK file
containing instrument mounting alignment and FOV
geometry parameters. This file also contains
MOLA Frame definition and coordinates of the
spacecraft center of mass and antenna phase
centers for a some spacecraft/antenna
configurations.
MGS_TES_V12 Thermal Emission Spectrometer (TES) IK file
containing instrument mounting alignment, FOV
and optics geometry parameters. This file also
contains TES Frame definitions.
All IK files provided in this data set contain actual data.
Kernel File Details
===================
The most detailed description of the data in an IK file is
provided in metadata included inside the description area of
the file. This information can be viewed using any text editor
program.
Contact Information
===================
Regarding MGS project specific information provided in this
data set and for general information about SPICE system:
Charles H. Acton, Jr,
(818)-354-3869,
Chuck.Acton@jpl.nasa.gov,
or
Boris Semenov
(818)-354-8136
Boris.Semenov@jpl.nasa.gov
address:
Navigation and Ancillary Information Facility (NAIF)
Jet Propulsion Laboratory
MS 301-125L
4800 Oak Grove Drive
Pasadena CA 91109 USA