MeasStarTracker:

Path: SC/Sensor

% Returns the output of a star tracker.

   The field "kQ" selects the quaternion from the state vector x.
   The output is the noisy ECI to body quaternion.
   This does not check for sun interference or eclipses.

   If no inputs are given it will return the default data structure.

   Since version 11.
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   Form:
   y = MeasStarTracker( x, d )
   d = MeasStarTracker
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   ------
   Inputs    
   ------
   x         (n,1)  State vector
   d         (1,1)  Data structure
                    .kQ    (1,4) Quaternion indices
                    .noise (3,1) 1 sigma noise in the sensor frame
                    .qBToS (4,n) Body to sensor quaternion

   -------
   Outputs
   -------
   y         (4,n)   Measurements

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Children:

Common: Quaternion/QMult
Common: Quaternion/QTForm
Common: Quaternion/QUnit
Common: Transform/Eul2Q

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