-------------------------------------------------------------------------------
   yB computation used as part of the probability of detection algorithm.
   See also FPFA.
-------------------------------------------------------------------------------
   Form:
   [yB, err] = YBComp( n,  pFA )
-------------------------------------------------------------------------------

   ------
   Inputs
   ------
   n             (1,1)    Number of pulses
   pFA           (1,:)    Probability of false alarm

   -------
   Outputs
   -------
   yB            (1,1)   yB value
   err           (1,1)   Error

-------------------------------------------------------------------------------
    Reference: Yoder, M. J. and D. Seliverstov, "End-to-end laser radar code
               for coherent CW lasers," Laser Radar Technology and Applications
               Proceedings SPIE, Volume 2748, pp. 232-245.
-------------------------------------------------------------------------------