Courtney - I am unfamiliar with the equipment but the document talks of a 'ship stabilised velocity vector' whereas the VVs we all use (or don't if we're listening to the LSOs) are 'earth stabilised'. So somehow it's accounting for the forward motion of the ship. If you put a classic VV on the Fresnel lens you would drop short...and probably hit the port side of the ship. This needn't necessarily be seen as a bad thing because you would probably hit the LSO platform....
