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ACQUISITION   AND   TRACKING
RADAR  SYSTEMS  IN  TODAYS  NAVY

Fire Controlman Volume 02-Fire Control Radar Fundamentals (Revised)
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LAUNCHER/GUN   POSITIONING.—The third   operation   that   must   be   performed   is   the positioning   of   the   gun/launcher,   based   on   the calculated line of fire to the future target position.  This amounts to using the gun/launcher drive mechanism to offset   the   gun/launcher   axis   from   the   LOS   by   the amount of the predicted lead angle.  In some cases, the missile   is   positioned   (guided)   in   flight   by   the   fire control system. GUIDANCE   (MISSILES).—For   the   Guided Missile   Fire   Control   System   (GMFCS),   additional functions   must   be   performed   during   the   time   the missile is in flight.   Prior to launching, the fire control computer  performs  certain  computations  to  provide the  missile  with  information  about  the  target  and  its own  flight  path.    If  the  target  maneuvers  during  the missile’s   flight,   the   computer   can   send   course correction data to the missile via the fire control radar or the missile can correct itself. EVALUATION.—The fire control radar displays are  used  to  evaluate  the  weapon’s  destruction  of  the target.   If the missile misses the target or causes only minor  damage,  additional  weapons  can  be  used.     In missile fire control, another missile is fired.  In gun fire control, corrections are made to bring the fall of shot onto   a   target   using   the   radar   indicators,   optical devices,  or  spotter  corrections.     Normally,  a  target will be fired at until it is evaluated as either destroyed or damaged to the point it is no longer a threat. 1-20 DETECTION ACQUISITION AND TRACKING PREDICTION GUN   OR LAUNCHER POSITIONING GUIDANCE EVALUATION FCRf0123 Figure 1-23.—Fire-control problem sequence.






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