MSOPCK setup for SDU CK generation.
==============================================================================

\begindata

   PRODUCER_ID             = 'SDU NAV'

   LSK_FILE_NAME           = 'naif0007.tls'
   SCLK_FILE_NAME          = 'SD_SCLKSCET.00038.tsc'
   INTERNAL_FILE_NAME      = 'SDU SC Orientation CK File by SDU NAV'
   COMMENTS_FILE_NAME      = 'msopck_comments.example'

   CK_SEGMENT_ID           = 'SDU SC BUS ATTITUDE'

   INSTRUMENT_ID           = -29000
   REFERENCE_FRAME_NAME    = 'J2000'

   CK_TYPE                 = 3
   MAXIMUM_VALID_INTERVAL  = 60000000

   INPUT_TIME_TYPE         = 'UTC'

   INPUT_DATA_TYPE         = 'MSOP QUATERNIONS'
   QUATERNION_NORM_ERROR   = 1.0E-3

   ANGULAR_RATE_PRESENT    = 'MAKE UP'

\begintext

Important Notes Regard Setup Keywords
==============================================================================

-- INSTRUMENT_ID           = -29000

      This is the ID to use for the SDU s/c bus.

-- REFERENCE_FRAME_NAME    = 'J2000'

      Tell the program that input quaternions are with respect to 
      EME (SDU ACS and NAVIO(?) standard.)

-- CK_TYPE                 = 3

      Tells the program to generate continuous CK of type 3.

-- MAXIMUM_VALID_INTERVAL  = 60000000

      Essentially, tells the program to generate CK which will allow 
      interpolation between all input data points (60000000 sec is 
      ~ 2 years :-). You must have this specified.

-- INPUT_TIME_TYPE         = 'UTC'

      Tells the program that input times are UTCs (SCETs). If yours
      input times are SCLKs, set this keyword to 'SCLK'.

-- INPUT_DATA_TYPE         = 'MSOP QUATERNIONS' 
      
      Tells the program that quaternions are "ACS standard quaternions".
      (I belive that NAVIO file uses the same convention.)
      It needs to know this because NAIF uses different quaternion 
      representation.

-- QUATERNION_NORM_ERROR   = 1.0E-3

      Simple filter to make sure that input quaternions are at least 
      this close to a unit vector. If you are confident in your 
      input quaternions, you can "drop" this keyword.

-- ANGULAR_RATE_PRESENT    = 'MAKE UP'

      The program will "manufacture" angular rates using quaternions 
      provided in the input. If you have angular rates in the input,
      set ANGULAR_RATE_PRESENT to 'YES' and specify additional 
      keyword ANGULAR_RATE_FRAME = 'INSTRUMENT' to tell the program that
      angular rates are given in the spacecraft frame.

Other setup keywords are obvious :-)