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   Computes the depointing loss
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   Form:
   l = LossDepointing( theta, theta3DB )
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   ------
   Inputs
   ------
   theta          (:)  Depointing
   theta3DB       (:)  3DB Angle

   -------
   Outputs
   -------
   l              (n,m)  Loss (dB)

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	 Reference: Maral, G. and M. Bousquet. (1998.) Satellite Communications
               Systems, Third Edition. John Wiley. p. 27.
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