text: Short-Range Air Defense System Descriptions
  Figure A-4. Sentinel
  LAND-BASED PHALANX WEAPON SYSTEM
  A-12. The Land-based Phalanx Weapon System is a fast reacting, short-range system used to detect incoming
  rockets and mortars, provide focused early warning, and destroy inbound rockets and artillery and mortar
  projectiles in the air before they hit their ground targets. The intercept system has an integral sensor for
  targeting and a multi-barrel gun system to destroy RAM threats. For more information, see ATP 3-01.60.
  A-13. The Land-based Phalanx Weapon System (figure A-5 on page A-6) consists of a trailer-mounted close-
  in weapon system. The close-in weapon system is a 20-millimeter Gatling gun, with six gun barrels, separate
  search-and-track radars, and forward-looking infrared radar. The gun system is capable of firing at a
  selectable rate of 3,000 to 4,500 rounds per minute, with an advanced K -band radar to provide autonomous
  u
  target detection and engagement. Using the K -band radar, the Land-based Phalanx Weapon System detects
  u
  threats early in flight and hands them over to the track mode only when those targets are determined to
  threaten the area protected by the system. Two 60-kilowatt generators mounted on the trailer supply power
  to the entire system.