The GE AN/GPA-73 Radar Course Directing Group [1] (mobile version AN/CPA-73) [2] was an air defense command, control, and coordination system of the United States Air Force. It was developed for the Electronic Systems Division 412L Air Weapons Control System (colloq. "AWCS 412L") [3] for weapons direction (ground-controlled interception, GCI, by "Fire Direction and Control Equipment"). [4] : 29 The AN/GPA-73 was used to create a "Base Air Defense Ground Environment" (BADGE II), for which Air Defense Command had recommended the system as "SAGE back-up (Mode Ill) control of BOMARC" in June 1958. [5] When the GPA-73 was emplaced with the AN/FSA-21 Weapons Control Group computer for GCI, the system created a "miniature SAGE" military installation. [6] The GPA-73 could also direct Project Nike surface-to-air missile fire from Nike Integrated Fire Control sites equipped with the "412 Target Designation System" in the Battery Control Van in a space allocated by February 1957 "behind the Acquition Operator[ sic ]". [7] and the AN/GPA-73.
The 412L Joint Test Force was located at Myrtle Beach Air Force Base in 1963, [3] testing revealed fragility that limited the unit to fixed emplacements, and "Tactical Air Command subsequently rejected the GPA-73 as part of its mobility forces." [2] The 412L equipment supported "Det 1, 17th Air Force [in] the Allied Sector Operations Center III at Börfink", Germany, which had a nuclear bunker where on July 2, 1975, the 615th Aircraft Control and Warning Squadron temporarily stopped 412L operations [for] Constant Keystone modification." [2] Sites with the AN/GPA-73 planned for the Alaska Semi-Automatic Defense System (ALSADS) were cancelled on January 26, 1960, [4] : 49 and the last "operational 412L equipment" was used by USAFE in Germany. [2]
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The GPA-73 included the following equipment (quantity in parentheses): [3]
The Semi-Automatic Ground Environment (SAGE) was a system of large computers and associated networking equipment that coordinated data from many radar sites and processed it to produce a single unified image of the airspace over a wide area. SAGE directed and controlled the NORAD response to a possible Soviet air attack, operating in this role from the late 1950s into the 1980s. Its enormous computers and huge displays remain a part of Cold War lore, and after decommissioning were common props in movies such as Dr. Strangelove and Colossus, and on science fiction TV series such as The Time Tunnel.
The AN/FSQ-7 Combat Direction Central, referred to as the Q7 for short, was a computerized air defence command and control system. It was used by the United States Air Force for ground-controlled interception as part of the Semi-Automatic Ground Environment network during the Cold War.
Rome Laboratory is a U.S. Air Force research laboratory for "command, control, and communications" research and development and is responsible for planning and executing the USAF science and technology program.
The AN/FPS-108 COBRA DANE is a PESA phased array radar installation operated by Raytheon for the United States Space Force at Eareckson Air Station on the island of Shemya, Aleutian Islands, Alaska. The system was built in 1976 and brought online in 1977 for the primary mission of gathering intelligence about Russia's ICBM program in support of verification of the SALT II arms limitation treaty. Its single face 29 m (95 ft) diameter phased array radar antenna 52.7373°N 174.0914°E faces the Kamchatka Peninsula and Russia's Kura Test Range. COBRA DANE operates in the 1215–1400 MHz band and can track items as small as a basketball sized drone at distances of several hundred miles.
Ground Equipment Facility J-33 is a Federal Aviation Administration (FAA) radar station of the Joint Surveillance System's Western Air Defense Sector (WADS) with an Air Route Surveillance Radar (ARSR-4). The facility was previously a USAF general surveillance radar station during the Cold War.
List of abbreviations, acronyms and initials related to military subjects such as modern armour, artillery, infantry, and weapons, along with their definitions.
Ground Equipment Facility QRC is an FAA radar station that was part of a Cold War SAGE radar station for aircraft control and warning "from Massachusetts to southern Virginia, and as far out to sea as possible." Benton AFS was also the first operational "regional data processing center" for the GE 477L Nuclear Detection and Reporting System.
The SAGE radar stations of Air Defense Command were the military installations operated by USAF squadrons using the first automated air defense environment and networked by the SAGE System, a computer network. Most of the radar stations used the Burroughs AN/FST-2 Coordinate Data Transmitting Set (CDTS) to automate the operator environment and provide radar tracks to sector command posts at SAGE Direction Centers (DCs), e.g., the Malmstrom Z-124 radar station was co-located with DC-20. The sector/division radar stations were networked by DCs and Manual Control Centers to provide command, control, and coordination for ground-controlled interception of enemy aircraft by interceptors such as the F-106 developed to work with the SAGE System.
The AN/FPS-6 Radar was a long-range height finding radar used by the United States Air Force's Air Defense Command. The AN/FPS-6 radar was introduced into service in the late 1950s and served as the principal height-finder radar for the United States for several decades thereafter. It was also used by the Royal Air Force alongside their AMES Type 80s. Built by General Electric, the S-band radar operated on a frequency of 2700 to 2900 MHz. Between 1953 and 1960, about 450 units of the AN/FPS-6 and the mobile AN/MPS-14 version were produced. The AN/FPS-90 and AN/FPS-116 radars were identical to the AN/FPS-6 except for receiver modifications.
The AN/FPS-20 was a widely used L band early warning and ground-controlled interception radar system employed by the United States Air Force Air Defense Command, the NORAD Pinetree Line in Canada, the USAF CONAD in the continental United States, and a variety of other users. The design started life as the Bendix AN/FPS-3 in 1950, was upgraded to the FPS-20, then spawned over a dozen different variants as additional upgrades were applied. The FPS-20 formed the backbone of the US air defense network through the early Cold War with over 200 units deployed. Most FPS-20 sites were replaced by modern equipment in the late 1960s, although a number were turned over to the FAA, modified for air traffic control use, and became ARSR-60s.
The Martin AN/FSG-1 Antiaircraft Defense System, better known as Missile Master, was an electronic fire distribution center for United States Army surface-to-air missiles. It aimed to computerize Cold War air defense (AD) command posts from manual plotting board operations to automated command and control.
Missile Master was a US Army surface-to-air missile control complex/facility. It controlled Project Nike missiles. Virtually all Missile Masters had a bunker housing the Martin AN/FSG-1 Antiaircraft Defense System, as well as additional structures for "an AN/FPS-33 defense acquisition radar (DAR) or similar radar, two height-finder radars," and identification friend or foe secondary radar. The radars, along with Automated Data Links (ADL) from remote Nike firing units, provided data into the AN/FSG-1 tracking subsystem with the DAR providing surveillance coverage to about 200 miles (320 km).
The Raytheon AN/MSQ-18 Battalion Missile Operations System was a Project Nike command, control, and coordination system for "each associated missile battery" to control a Nike missile as directed from a Raytheon AN/MSQ-28 at the Army Air Defense Command Post. Raytheon Company constructed the AN/MSQ-18 as 2 separate subsystems:
Ground Air Transmit Receive (GATR) control sites were the radio stations of a Burroughs 416L SAGE Defense System of the United States Air Force.
The Fort Heath radar station was a USAF radar site and US Army Missile Master installation of the joint-use site system (JUSS) for North American Air Defense at a former coastal defense site. The Cold War radar station had 2 USAF AN/FPS-6B height finding radars, 2 Army AN/FPS-6A height finders, an FAA ARSR-1 radar emplaced 1958-9, and an Army nuclear bunker. Arctic Towers were the pedestals for the FPS antennas and radomes, while the Air Route Surveillance Radar was on a 50-foot extension temperate tower adjacent to the Federal Aviation Administration building.
The GE AN/GPA-37 Course Directing Group was a USAF Cold War air defense command, control, and coordination system for weapons direction. During Air Defense Command's "Control Capability Improvement Program" to improve command guidance of manned aircraft, the AN/GPA-37 was "developed by the General Electric Heavy Military Electronic Equipment Department at Syracuse in conjunction with...Rome Air Development Center and the Electronics Research Laboratories of Columbia University." Used to process radar data, the system was to "track a potential enemy aircraft and direct intercepters [sic] into a position from which they can make their automatic firing runs", the system included the:
An Air Defense Direction Center (ADDC) was a type of United States command post for assessing Cold War radar tracks, assigning height requests to available height-finder radars, and for "Weapons Direction": coordinating command guidance of aircraft from more than 1 site for ground-controlled interception. As with the World War II Aircraft Warning Service CONUS defense network, a "manual air defense system" was used through the 1950s Along with 182 radar stations at "the end of 1957, ADC operated … 17 control centers", and the Ground Observation Corps was TBD on TBD. With the formation of NORAD, several types of ADDCs were planned by Air Defense Command:
The Experimental Semi-Automatic Ground Environment (SAGE) Sector was a prototype Cold War Air Defense Sector for developing the Semi Automatic Ground Environment. The Lincoln Laboratory control center in a new building was at Lexington, Massachusetts.
The IBM 473L Command and Control System was a USAF Cold War "Big L" Support System with computer equipment at The Pentagon and, in Pennsylvania, the Alternate National Military Command Center nuclear bunker. Each 473L site included a Data Processing Subsystem (DPSS), Integrated Console Subsystem (ICSS), Large Panel Display Subsystem, and Data Communications Subsystem. The "System 473L" was an "on-line, real-time information processing system designed to facilitate effective management of USAF resources, particularly during emergency situations" e.g., for: "situation monitoring, resource monitoring, plan evaluation, plan generation and modification, and operations monitoring". In 1967, the 473L System was used during the "HIGH HEELS 67" exercise "to test the whole spectrum of command in a strategic crisis".
FYQ-93 was a computer system used from 1983 to 2006, and built for the Joint Surveillance System (JSS) by the Hughes Aircraft Company. The system consisted of a fault tolerant central computer complex using a two string concept that interfaced with many display consoles and interfaced with external radars to provide a region-sector display of air traffic.
A symposium on the AN/GPA-37 system was held at Rome Air Development Center on 26 and 27 July. This system involves a technique for ground control of interceptors by use of the Tracker-Computer (AH/GPA-23), which was developed at Columbia University. Field tests on this system will begin in November 1955; It would be worthwhile to follow the activities of these field tests. … The Systems Office has obtained more detailed information about the Radar Course Directing Group, AN/GPA-37, at a symposium held at RADC on 26 and 27 July. The GPA-37 is intended for backup air defense for SAGE and will be operated at the Heavy Radar P-sites in the Zone of Interior. … All XD-1 frames have now been delivered. The LRI and output frame3 arrived 29 July.
10 February 62 (U) Installation of mobile CPA-73 started atop Erbeskopf mountain.