KPL/IK Juno JEDI Instrument Kernel =============================================================================== This Instrument Kernel (IK) file contains parameters and FOV definitions for the JUNO Jupiter Energetic-particles Detector Instrument (JEDI) sensors. Version and Date ------------------------------------------------------------------------------- Version 0.0 -- June 8, 2009 -- Boris Semenov, NAIF Initial Release. References ------------------------------------------------------------------------------- 1. Kernel Pool Required Reading 2. GETFOV, getfoc_c, cspice_getfov headers 3. JUNO FK file, latest version 4. JEDI CDR Presentations Contact Information ------------------------------------------------------------------------------- Boris V. Semenov, NAIF/JPL, (818)-354-8136, Boris.Semenov@jpl.nasa.gov Implementation Notes ------------------------------------------------------------------------------- This file is used by the SPICE system as follows: programs that make use of this kernel must ``load'' the kernel, normally during program initialization. The SPICE routine FURNSH loads a kernel file into the pool as shown below. CALL FURNSH ( 'frame_kernel_name; ) -- FORTRAN furnsh_c ( "frame_kernel_name" ); -- C cspice_furnsh, frame_kernel_name -- IDL cspice_furnsh( 'frame_kernel_name' ) -- MATLAB Once the file has been loaded, the SPICE routine GETFOV (getfov_c in C, cspice_getfov in IDL and MATLAB) can be used to retrieve FOV parameters for a given instrument or structure. This file was created and may be updated with a text editor or word processor. Naming Conventions ---------------------------------------------------------- All names referencing values in this IK file start with the characters `INS' followed by the NAIF JUNO spacecraft ID number (-61) followed by a NAIF three digit ID code for one of the JEDI sensors. This is the full list of names and IDs for the JEDI sensors described by this IK file: JUNO_JEDI_090 -61301 JUNO_JEDI_A180 -61302 JUNO_JEDI_270 -61303 The remainder of the keyword name is an underscore character followed by the unique name of the data item. For example, the JEDI/090 boresight direction in the JUNO_JEDI_090 frame is specified by: INS-61301_BORESIGHT The upper bound on the length of the name of any data item is 32 characters. If the same item is included in more than one file, or if the same item appears more than once within a single file, the latest value supersedes any earlier values. Instrument Description --------------------------------------------------------- TBD Mounting Alignment -------------------------------------------------------- Refer to the latest version of the Juno Frames Definition Kernel (FK) [3] for the JEDI reference frame definitions and mounting alignment information. Sensor Parameters --------------------------------------------------------- TBD Are there any parameters to be included here to describe 30 degree angular resolution? JEDI Sensor FOVs ---------------------------------------------------------- The JEDI Sensor FOVs are defined as polygonal pyramids using ten boundary vectors to represent the +/-80 degree azimuth (+80/-68 degree for JEDI/A180), +/-6 degree elevation FOVs shown in [4], using 40 degree azimuthal step. The boresight is along +X of the corresponding JUNO_JEDI_* frame. \begindata INS-61301_FOV_FRAME = 'JUNO_JEDI_090' INS-61301_FOV_SHAPE = 'POLYGON' INS-61301_BORESIGHT = ( 1.0, 0.0, 0.0 ) INS-61301_FOV_BOUNDARY_CORNERS = ( 0.17269691 -0.97941287 -0.10452846 0.76184797 -0.63926635 -0.10452846 0.99452190 0.00000000 -0.10452846 0.76184797 0.63926635 -0.10452846 0.17269691 0.97941287 -0.10452846 0.17269691 0.97941287 0.10452846 0.76184797 0.63926635 0.10452846 0.99452190 0.00000000 0.10452846 0.76184797 -0.63926635 0.10452846 0.17269691 -0.97941287 0.10452846 ) INS-61302_FOV_FRAME = 'JUNO_JEDI_A180' INS-61302_FOV_SHAPE = 'POLYGON' INS-61302_BORESIGHT = ( 1.0, 0.0, 0.0 ) INS-61302_FOV_BOUNDARY_CORNERS = ( 0.37255446 -0.92210464 -0.10452846 0.76184797 -0.63926635 -0.10452846 0.99452190 0.00000000 -0.10452846 0.76184797 0.63926635 -0.10452846 0.17269691 0.97941287 -0.10452846 0.17269691 0.97941287 0.10452846 0.76184797 0.63926635 0.10452846 0.99452190 0.00000000 0.10452846 0.76184797 -0.63926635 0.10452846 0.37255446 -0.92210464 0.10452846 ) INS-61303_FOV_FRAME = 'JUNO_JEDI_270' INS-61303_FOV_SHAPE = 'POLYGON' INS-61303_BORESIGHT = ( 1.0, 0.0, 0.0 ) INS-61303_FOV_BOUNDARY_CORNERS = ( 0.17269691 -0.97941287 -0.10452846 0.76184797 -0.63926635 -0.10452846 0.99452190 0.00000000 -0.10452846 0.76184797 0.63926635 -0.10452846 0.17269691 0.97941287 -0.10452846 0.17269691 0.97941287 0.10452846 0.76184797 0.63926635 0.10452846 0.99452190 0.00000000 0.10452846 0.76184797 -0.63926635 0.10452846 0.17269691 -0.97941287 0.10452846 ) \begintext End of the IK file.