Ballistic Missile Early Warning System - définition. Qu'est-ce que Ballistic Missile Early Warning System
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Qu'est-ce (qui) est Ballistic Missile Early Warning System - définition

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]].

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.
SuperNova Early Warning System         
NETWORK OF NEUTRINO DETECTORS FOR ALERTING ASTRONOMERS TO NEARBY SUPERNOVAE
SNEWS; Supernova Early Warning System (physics); Supernova Early Warning System
The SuperNova Early Warning System (SNEWS) is a network of neutrino detectors designed to give early warning to astronomers in the event of a supernova in the Milky Way, our home galaxy, or in a nearby galaxy such as the Large Magellanic Cloud or the Canis Major Dwarf Galaxy.
Earthquake warning system         
  • Deployment of Early Earthquake Warning Systems
  • Example of early warning issued by [[ShakeAlert]]
  • Warning time given by the earthquake warning system of the [[Earthquake Network]] project<ref name="finazzifasso"/> during the [[May 2015 Nepal earthquake]]. The cross marker depicts the earthquake [[epicenter]] while the dot marker shows the detection location.
SYSTEM TO ALERT ADJOINING REGIONS OF A SUBSTANTIAL EARTHQUAKE WHILE IT IS IN PROGRESS
Earthquake warning; Eew; Earthquake early warning; Earthquake Early Warning; Earthquake early warning system; Earthquake early-warning system; Early earthquake warning; Early Earthquake Warning; Early earthquake warning system; EEW; EQW; Earthquake detection; MyShake
An earthquake warning system or earthquake early warning system is a system of accelerometers, seismometers, communication, computers, and alarms that is devised for notifying adjoining regions of a substantial earthquake while it is in progress. This is not the same as earthquake prediction, which is currently incapable of producing decisive event warnings.

Wikipédia

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).

Exemples du corpus de texte pour Ballistic Missile Early Warning System
1. The US ballistic missile early warning system. later spotted spacecraft debris in the Earth‘s atmosphere in January 1'63.