BMEWS Ballistic Missile Early Warning - ορισμός. Τι είναι το BMEWS Ballistic Missile Early Warning
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Τι (ποιος) είναι BMEWS Ballistic Missile Early Warning - ορισμός

US COLD WAR EARLY WARNING RADAR FOR BALLISTIC MISSILE DEFENSE
BMEWS; Ballistic Missile Warning System; AN/FPS-50; AN/FPS-49
  • Skolnik}} from detecting the missiles.
A missile within the lower arc (~1.75-5.25° elevation) would be detected at a "Lower Fan Q Point" (black dot) and then by the upper fan (black dot with jagged outline), which allowed the impact area to be estimated from "where the object crossed the two fans and the elapsed time interval between fan crossings"<ref name=BMW /> (displays showed the uncertain impact point as an elliptical area.)   The free flight range of the missile outside the atmosphere (burnout to reentry) depends on the flight path angle and on the missile's parametric value of Q calculated from altitude and speed—additional ballistic range within the atmosphere to an estimated burst altitude was determined from computerized look-up tables in the Missile Impact Predictor.<ref name=BMW />}}
  • Three of the huge AN/FPS-50 radars, BMEWS Site 2, near Anderson, Alaska, in 1962.
  • (renamed "Missile Warning Operations Center"<ref>[http://www.globalsecurity.org/space/facility/clear-mwoc.htm Clear AFS<!-- Bot generated title -->]</ref>)}}
  • quote=in March 1963 an Air Ministry review of ABM systems said of MIDAS that ‘performance to date has been disappointing’.<sup>78</sup> … A teletype circuit was established between NORAD and the ADOC in Britain to pass information derived from Site 1 at Thule.<sup>95</sup> This was supplemented by a voice circuit with agreed formatted messages, and both were operational by October 1960. … AN/FPS-49 Range resolution 240 nm Maximum range 2,650 nm Minimum target at 1,650&nbsp;m 2.8 m<sup>2</sup> Impact accuracy North America 135 nm}}</ref> }}
  • date= July 12, 1999}}</ref>}} The concrete foundation included a large refrigeration system to prevent the curing concrete's heat from melting the [[permafrost]].

Anti-ballistic missile         
  • [[Arrow 3]] in testing.
  • Israel's [[Arrow 3]]
  • An Arrow 2 anti-ballistic missile interceptor
  • Aster 30 missiles]]
  • Launch of a [[US Army]] [[Nike Zeus]] missile, the first ABM system to enter widespread testing.
  • U.S. Navy]]
  • Hiroshima-style]] weapons.
  • S-300PMU-2]] vehicles. From left to right: 64N6E2 detection radar, 54K6E2 command post and 5P85 TEL.
  • 6}} firing a [[Standard Missile 3]] anti-ballistic missile.
  • [[United States Navy]] [[RIM-161 Standard Missile 3]] anti-ballistic missile.
  • V-1000
  • 1946 [[Project Wizard]] missile
SURFACE-TO-AIR MISSILE DESIGNED TO TARGET BALLISTIC MISSILES IN FLIGHT
Anti-Ballistic Missile; Antiballistic missile; Anti-ballistic missiles; Anti-ballistic missile defence; AABM; Anti ballistic missile; Antiballistic missile system; Ballistic missile defence; Anti-Ballistic Missiles; Anti–ballistic missile; Interceptor missile; Antiballistic; Anti-ballistic; Fakel V-1000; Kestrel eye
An anti-ballistic missile (ABM) is a surface-to-air missile designed to counter ballistic missiles (missile defense). Ballistic missiles are used to deliver nuclear, chemical, biological, or conventional warheads in a ballistic flight trajectory.
Early warning system         
  • EWS Observer Controller Model and the Subsystem
EARLY DETECTION OF PROBLEMATIC OUTCOMES, TYPICALLY USING SENSORS, EVENT DETECTION AND DECISION SUBSYSTEMS
Early warning; Early warning systems; Early Warning System
An early warning system is a warning system that can be implemented as a chain of information communication systems and comprises sensors, event detection and decision subsystems for early identification of hazards. They work together to forecast and signal disturbances that adversely affect the stability of the physical world, providing time for the response system to prepare for the adverse event and to minimize its impact.
Early-warning radar         
  • alt=RAF Fylingdales
FORM OF RADAR SYSTEM
Microwave Early Warning; Air warning radar; Early warning radar
An early-warning radar is any radar system used primarily for the long-range detection of its targets, i.e.

Βικιπαίδεια

Ballistic Missile Early Warning System

The RCA 474L Ballistic Missile Early Warning System (BMEWS, "474L System", Project 474L) was a United States Air Force Cold War early warning radar, computer, and communications system, for ballistic missile detection. The network of twelve radars, which was constructed beginning in 1958 and became operational in 1961, was built to detect a "mass ballistic missile attack launched on northern approaches [for] 15 to 25 minutes' warning time" also provided Project Space Track satellite data (e.g., about one-quarter of SPADATS observations).