KPL/IK

LADEE LDEX Instrument Kernel
===============================================================================

   This Instrument Kernel (IK) file contains the Field-Of-View (FOV)
   definition for the Lunar Dust EXperiment (LDEX) instrument.


Version and Date
-------------------------------------------------------------------------------

   Version 0.1 -- May 6, 2021 -- Marc Costa Sitha, NAIF

      Removed comment in Instrument FOV section.

   Version 0.0 -- October 16, 2013 -- Boris Semenov, NAIF


References
-------------------------------------------------------------------------------

   1. Kernel Pool Required Reading

   2. GETFOV, getfoc_c, cspice_getfov headers

   3. LADEE FK file, latest version

   4. STK Sensor files provided by Mark Shirley, 09/25/13. 


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 ID number for LDEX:

      LADEE_LDEX         -12200

   This ID is defined in the latest LADEE FK ([3]).

   The remainder of the keyword name is an underscore character
   followed by the unique name of the data item. For example, the LDEX
   boresight direction in the LDEX frame is specified by:

      INS-12200_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
---------------------------------------------------------

   The Lunar Dust EXperiment (LDEX) instrument is an impact
   ionization dust detector. Its overall size is comparable to a
   bread box and it consists of three main sections: an Electronics
   Box Assembly, a Front End Detector, and an Aperture Door
   Assembly.


Mounting Alignment
--------------------------------------------------------

   Refer to the latest version of the LADEE Frames Definition Kernel
   (FK) [3] for the LADEE LDEX reference frame definitions and mounting
   alignment information.


Instrument FOV
----------------------------------------------------------

   This section defines FOV for LDEX based on [4]:

          NAME            ID     HALFSIZE   SHAPE    BSIGHT    FRAME
      ----------------  -------  ---------  -------  ------  ----------
      LADEE_LDEX        -12200   34.5  deg   cone      Z     LADEE_LDEX

   The FOVs are defined in this data block.

      \begindata

      INS-12200_FOV_CLASS_SPEC       = 'ANGLES'
      INS-12200_FOV_SHAPE            = 'CIRCLE'
      INS-12200_FOV_FRAME            = 'LADEE_LDEX'
      INS-12200_BORESIGHT            = ( 0.0, 0.0, 1.0 )
      INS-12200_FOV_REF_VECTOR       = ( 1.0, 0.0, 0.0 )
      INS-12200_FOV_REF_ANGLE        = ( 34.5 )
      INS-12200_FOV_ANGLE_UNITS      = ( 'DEGREES' )

      \begintext

End of the IK file.