OpticalNavPlanetStar:

Path: SpacecraftEstimation/OpticalNavigation

% Computes optical measurements for planets and stars.
   Inputs are planets and stars. Measurements are planet chords, 
   angles between planets and star/planet angles. 
   Noise may be added. Position noise is added to all 3 axes.

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   Form:
   y = OpticalNavPlanetStar( x, g, noise )
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   ------
   Inputs
   ------
   x     (:,1) ECI position of sensor [r;...]
   g     (1,1) Data structure 
               .uS                  (3,:)   Star unit vectors in ECI
               .nS                  (1,:)   Number of stars per planet
               .kP                  (1,:)   Planet to use
               .planet              (1,1)   Planet data structure
               .jD                  (1,1)   Julian date
               .mode                (1,:)   'polar star' or 'two planet'
   noise (1,1) Data structure
               .planetPosition      (1,9)   Position error (m)
               .planetRadius        (1,9)   Radius Error
               .angle               (1,1)   Angle error (rad)

   -------
   Outputs
   -------
   y     (:,1) Measurement [chords;planet/planet;planet/star]

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Children:

Math: Linear/Mag
Math: Linear/Unit

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