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  2. Western Electric M-33 Antiaircraft Fire Control System

    en.wikipedia.org/wiki/Western_Electric_M-33...

    In 1944, the US Army contracted [7] for an electronic "computer with guns, a tracking radar, plotting boards and communications equipment" (M33C & M33D models used different subassemblies for 90 & 120 mm gun/ammunition ballistics.) [3] The "trial model predecessor" (T-33) was used as late as 1953, [8] and the production M33 (each $383,000 in 1954 dollars) [9] had been deployed in 1950. [10]

  3. United States general surveillance radar stations - Wikipedia

    en.wikipedia.org/wiki/United_States_general...

    Permanent System radar stations, the Air Defense Command manual network of radar stations prior to deployment of SAGE; Pinetree Line, a series of radar stations located across southern Canada at about the 50th parallel north. Lashup Radar Network radar stations, the radar stations deployed 1950-2 when the "Radar Fence" Plan was not approved

  4. AMES Type 80 - Wikipedia

    en.wikipedia.org/wiki/AMES_Type_80

    The AMES Type 80, sometimes known by its development rainbow code Green Garlic, [1] was a powerful early warning (EW) and ground-controlled interception (GCI) radar developed by the Telecommunications Research Establishment (TRE) and built by Decca for the Royal Air Force (RAF).

  5. Motorway Incident Detection and Automatic Signalling

    en.wikipedia.org/wiki/Motorway_Incident...

    Motorway Incident Detection and Automatic Signalling, usually abbreviated to MIDAS, is a UK distributed network of traffic sensors, mainly inductive loops (trialling at the moment radar technology by Wavetronix and magneto-resistive wireless sensors by Clearview Intelligence), which are designed to alert the local regional control centre (RCC) to traffic flow and average speeds, and set ...

  6. Command guidance - Wikipedia

    en.wikipedia.org/wiki/Command_guidance

    An example is later versions of the RIM-8 Talos missile as used in Vietnam: the radar beam was used to take the missile on a high arcing flight and then gradually brought down in the vertical plane of the target aircraft, the more accurate semi-active radar homing (SARH) being used at the last moment for the terminal homing and strike. This ...

  7. AN/FPS-117 - Wikipedia

    en.wikipedia.org/wiki/AN/FPS-117

    The AN/FPS-117 is an L-band active electronically scanned array (AESA) 3-dimensional air search radar first produced by GE Aerospace in 1980 and now part of Lockheed Martin. [1] [2] The system offers instrumented detection at ranges on the order of 200 to 250 nautical miles (370 to 460 km; 230 to 290 mi) and has a wide variety of interference and clutter rejection systems.

  8. List of White Alice Communications System sites - Wikipedia

    en.wikipedia.org/wiki/List_of_White_Alice...

    The former Northeast Cape Air Force Station on St. Lawrence Island. The remains of the station were demolished in 2003. This is a list of White Alice Communications System sites. The White Alice Communications System (WACS) was a United States Air Force telecommunication link system constructed in Alaska during the Cold War.

  9. High-frequency direction finding - Wikipedia

    en.wikipedia.org/wiki/High-frequency_direction...

    When the loop is aligned at right angles to the signal, the signal in the two halves of the loop cancels out, producing a sudden drop in output known as a "null". Early DF systems used a loop antenna that could be mechanically rotated. The operator would tune in a known radio station and then rotate the antenna until the signal disappeared.

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