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COBRA (radar)
COBRA COunter Battery RAdar is a Counter-battery radar system developed jointly by Thales, Airbus Defence and Space and Lockheed Martin for the French, British and German Armed Forces. It is a mobile Active electronically scanned array 3D radar based on a wheeled chassis for the purpose of enemy field artillery acquisition. There are believed to be about 20,000 Gallium arsenide integrated circuits in each antenna. This enables the equipment to produce the locations of multiple enemy artillery at extremely long ranges, and the radar is able to cope with saturation type bombardments. In addition there is a high degree of automated software, with high speed circuitry and secure data transmission to escape detection from enemy electronic countermeasures. Operators * * * * : In May 2022, it was reported that Ukraine had requested 40 COBRA systems from Germany amid the 2022 Russian invasion of Ukraine On 24 February 2022, in a major escalation of the Russo-Ukrai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weapon Locating Radar
A counter-battery radar (alternatively weapon tracking radar or COBRA) is a radar system that detects artillery projectiles fired by one or more guns, howitzers, mortars or rocket launchers and, from their trajectories, locates the position on the ground of the weapon that fired it. Such radars are a subclass of the wider class of target acquisition radars. Early counter-battery radars were generally used against mortars, whose lofted trajectories were highly symmetrical and allowed easy calculation of the launcher's location. Starting in the 1970s, digital computers with improved calculation capabilities allowed more complex trajectories of long-range artillery to also be determined. Normally, these radars would be attached to friendly artillery units or their support units, allowing them to quickly arrange counter-battery fire. With the aid of modern communications systems, the information from a single radar can be rapidly disseminated over long distances. This allows the rad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Radars
Ground may refer to: Geology * Land, the surface of the Earth not covered by water * Soil, a mixture of clay, sand and organic matter present on the surface of the Earth Electricity * Ground (electricity), the reference point in an electrical circuit from which voltages are measured * Earthing system, part of an electrical installation that connects with the Earth's conductive surface * Ground and neutral, closely related terms Law * Ground (often grounds), in law, a rational motive or basis for a belief, conviction, or action taken, such as a legal action or argument: * Grounds for divorce, regulations specifying the circumstances under which a person will be granted a divorce Music * ''Ground'' (album), the second album by the Nels Cline Trio * "Ground" (song), one of the songs in the debut album of the Filipino rock band Rivermaya * Ground bass, in music, a bass part that continually repeats, while the melody and harmony over it change * ''The Ground'', a 2005 album by No ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aistyonok
Aistyonok (russian: Аистёнок, ''Little Stork''; GRAU designation 1L271) is a counter-battery radar system developed and produced by Almaz-Antey for the Russian Armed Forces. It is a mobile radar for the purpose of detecting position of weapons such as field artillery and anti-aircraft weapons, calculating the trajectory of incoming shells, and the control of unmanned aerial vehicles. Aistyonok can detect moving ground targets at a distance of up to , with capabilities to detect mortar fire positions at a distance of up to , moving ground equipment at a distance of up to , and the adjustment of artillery fire from to depending on the conditions. The Aistyonok system was debuted in 2008, and has since been introduced for limited use in the North Caucasus by the Russian Armed Forces. See also * Penicillin (counter-artillery system) * AN/TPQ-36 Firefinder radar * AN/TPQ-37 Firefinder radar * Swathi Weapon Locating Radar * Red Color The Red Color ( he, צבע אדו� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swathi Weapon Locating Radar
The Weapon Locating Radar (WLR) also known as Swathi is a mobile artillery-locating phased array radar developed by India. This counter-battery radar is designed to detect and track incoming artillery and rocket fire to determine the point of origin for counter-battery fire. The WLR has been jointly developed by the Electronics and Radar Development Establishment (LRDE), a lab of the Defence Research and Development Organisation (DRDO) and Bharat Electronics Limited (BEL). The sub-systems have been fabricated by BEL based on the DRDO designs and delivered to LRDE for integration. History The Indian army projected a requirement for fire-finding radars in the 1980s. As early as 1989, the Indian Army evaluated the American AN/TPQ-36 and AN/TPQ-37 Firefinder radars. However, these radars were not allowed to be sold, and the procurement process was stopped by the Indian Government. In February 1995, a Request for Proposal (RFP) was issued to five companies for procurement of 4 WL ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AN/TPQ-37 Firefinder Radar
Hughes AN/TPQ-37 Firefinder Weapon Locating System is a mobile radar system developed in the late 1970s by Hughes Aircraft Company, achieving Initial Operational Capability in 1980 and full deployment in 1984. Currently manufactured by ThalesRaytheonSystems, the system is a long-range version of "weapon-locating radar", designed to detect and track incoming artillery and rocket fire to determine the point of origin for counter-battery fire. It is currently in service at brigade and higher levels in the United States Army and by other countries. The radar is trailer-mounted and towed by a truck. A typical AN/TPQ-37 system consists of the Antenna-Transceiver Group, Command Shelter and 60 kW Generator. Operation The AN/TPQ-37 is an electronically steered radar, meaning the radar does not actually move while in operation. The radar scans a 90-degree sector for incoming rocket, artillery and mortar fire. Upon detecting a possible incoming round, the system verifies the contac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AN/TPQ-36 Firefinder Radar
Hughes AN/TPQ-36 Firefinder weapon locating system is a mobile radar system developed in the mid-late 1970s by Hughes Aircraft Company and manufactured by Northrop Grumman and ThalesRaytheonSystems, achieving initial operational capability in May 1982. The system is a "weapon-locating radar", designed to detect and track incoming mortar, artillery and rocket fire to determine the point of origin for counter-battery fire. It is currently in service at battalion and higher levels in the United States Army, United States Marine Corps, Australian Army, Portuguese Army, Turkish Army, and the Armed Forces of Ukraine. The radar is typically trailer-mounted and towed by a Humvee. Upgrades Firefinder (V)7 adds a modular azimuth position system (MAPS). MAPS has a north seeking laser gyrocompass and a microprocessor controlled Honeywell H-726 inertial navigation system. Prior Firefinders used a survey team to find site latitude, longitude, and direction to North. With MAPS, reaction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cabinet Of Germany
The Federal Cabinet or Federal Government (german: link=no, Bundeskabinett or ') is the chief executive body of the Federal Republic of Germany. It consists of the Federal Chancellor and cabinet ministers. The fundamentals of the cabinet's organisation as well as the method of its election and appointment as well as the procedure for its dismissal are set down in articles 62 through 69 of the Basic Law for the Federal Republic of Germany (''Grundgesetz''). In contrast to the system under the Weimar Republic, the Bundestag may only dismiss the Chancellor with a constructive vote of no confidence (electing a new Chancellor at the same time) and can thereby only choose to dismiss the Chancellor with their entire cabinet and not simply individual ministers. These procedures and mechanisms were put in place by the authors of the Basic Law to both prevent another dictatorship and to ensure that there will not be a political vacuum left by the removal of Chancellor through a vote o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Die Welt
''Die Welt'' ("The World") is a German national daily newspaper, published as a broadsheet by Axel Springer SE. ''Die Welt'' is the flagship newspaper of the Axel Springer publishing group. Its leading competitors are the ''Frankfurter Allgemeine Zeitung'', the '' Süddeutsche Zeitung'' and the '' Frankfurter Rundschau''. The modern paper takes a self-described "liberal cosmopolitan" position in editing, but it is generally considered to be conservative."The World from Berlin" '' Der Spiegel'', 28 December 2009."Divided on unification" '' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2022 Russian Invasion Of Ukraine
On 24 February 2022, in a major escalation of the Russo-Ukrainian War, which began in 2014. The invasion has resulted in tens of thousands of deaths on both sides. It has caused Europe's largest refugee crisis since World War II. An estimated 8 million Ukrainians were displaced within their country by late May and 7.8 million fled the country by 8 November 2022, while Russia, within five weeks of the invasion, experienced its greatest emigration since the 1917 October Revolution. Following the 2014 Ukrainian Revolution, Russia annexed Crimea, and Russian-backed paramilitaries seized part of the Donbas region of south-eastern Ukraine, which consists of Luhansk and Donetsk oblasts, sparking a regional war. In March 2021, Russia began a large military build-up along its border with Ukraine, eventually amassing up to 190,000 troops and their equipment. Despite the build-up, denials of plans to invade or attack Ukraine were issued by various Russia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gallium Arsenide
Gallium arsenide (GaAs) is a III-V direct band gap semiconductor with a zinc blende crystal structure. Gallium arsenide is used in the manufacture of devices such as microwave frequency integrated circuits, monolithic microwave integrated circuits, infrared light-emitting diodes, laser diodes, solar cells and optical windows. GaAs is often used as a substrate material for the epitaxial growth of other III-V semiconductors, including indium gallium arsenide, aluminum gallium arsenide and others. Preparation and chemistry In the compound, gallium has a +3 oxidation state. Gallium arsenide single crystals can be prepared by three industrial processes: * The vertical gradient freeze (VGF) process. * Crystal growth using a horizontal zone furnace in the Bridgman-Stockbarger technique, in which gallium and arsenic vapors react, and free molecules deposit on a seed crystal at the cooler end of the furnace. * Liquid encapsulated Czochralski (LEC) growth is used for producing hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
