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IAI Heron
The IAI Heron (Machatz-1) is a medium-altitude long-endurance unmanned aerial vehicle (UAV) developed by the Malat (UAV) division of Israel Aerospace Industries. It is capable of Medium Altitude Long Endurance (MALE) operations of up to 52 hours' duration at up to 10.5 km (35,000 ft). It has demonstrated 52 hours of continuous flight, but the effective operational maximal flight duration is less, according to payload and flight profile. An advanced version, the Heron TP, is also known as the IAI Eitan. On 11 September 2005, it was announced that the Israel Defense Forces purchased US$50 million worth of Heron systems. Design and development The Heron navigates using an internal GPS navigation device, and either a pre-programmed flight profile (in which case the system is fully autonomous from takeoff to landing), manual override from a ground control station, or a combination of both. It can autonomously return to base and land in case of lost communication with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unmanned Surveillance And Reconnaissance Aerial Vehicle
An unmanned surveillance and reconnaissance aerial vehicle, is an unarmed military unmanned aerial vehicle, UAV that is used for intelligence, surveillance, target acquisition, and reconnaissance (ISTAR). Unlike unmanned combat aerial vehicle (UCAV), this type of system is not designed to carry aircraft ordnance such as missiles, ATGMs, or aerial bomb, bombs for drone strikes. The main purpose is to provide battlefield intelligence. Small sized short-range man-portable unmanned aerial vehicles are called miniature UAV also used for battlefield intelligence. Current models The Harbin BZK-005 family encompasses reconnaissance variant like BZK-005 alongside combat-focused models like the BZK-005C. CH-1and CH-2 variants are for reconnaissance. Future models and technology demonstrators Belgium The Belgians were early adopters of reconnaissance UAVs, introducing the MBLE Épervier, "Epervier (Sparrowhawk)" UAV in the early 1970s. It was built by Manufacture Belge De Lampes Et ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GPS Navigation Device
A satellite navigation (satnav) device or GPS device is a device that uses satellites of the Global Positioning System (GPS) or similar global navigation satellite systems (GNSS). A satnav device can determine the user's geographic coordinates and may display the geographical position on a map and offer routing directions (as in turn-by-turn navigation). , four GNSS systems are operational: the original United States' GPS, the European Union's Galileo, Russia's GLONASS, and China's BeiDou Navigation Satellite System. The Indian Regional Navigation Satellite System (IRNSS) will follow and Japan's Quasi-Zenith Satellite System ( QZSS) scheduled for 2023 will augment the accuracy of a number of GNSS. A satellite navigation device can retrieve location and time information from one or more GNSS systems in all weather conditions, anywhere on or near the Earth's surface. Satnav reception requires an unobstructed line of sight to four or more GNSS satellites, and is subject t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cast Lead
Cast may refer to: Music * Cast (band), an English alternative rock band * Cast (Mexican band), a progressive Mexican rock band * The Cast, a Scottish musical duo: Mairi Campbell and Dave Francis * ''Cast'', a 2012 album by Trespassers William * ''Cast'', a 2018 album by KAT-TUN Science and technology * Casting (metalworking) ** Cast iron, a group of iron-carbon alloys * Cast (geology), a cavity formed by decomposition that once were covered by a casing material * Cast, visible piles of mineral-rich organic matter excreted above ground by earthworms * Cast of the eye, a condition in which the eyes do not properly align with each other when looking at an object * Orthopedic cast, a protective shell to hold a limb in place, for example to help in healing broken bones * Cast (computer science), to change the interpretation of a bit pattern from one data type to another in computer programming * Urinary cast, tubules found in urine * Google Cast, a protocol built into the Goog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Times Of Israel
''The Times of Israel'' (ToI) is an Israeli multi-language online newspaper that was launched in 2012 and has since become the largest English-language Jewish and Israeli news source by audience size. It was co-founded by Israeli journalist David Horovitz, who is also the founding editor, and American billionaire investor Seth Klarman.Forbes: The World's Billionaires: Seth Klarman . April 2014. Based in , it "documents developments in Israel, the Middle East and around the Jewish world." Along with its original English site, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engine
The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compression (physics), compression; thus, the diesel engine is called a compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Introduction Diesel engines work by compressing only air, or air combined with residual combustion gases from the exhaust (known as exhaust gas recirculation, "EGR"). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases air temperature inside the Cylinder (engine), cylinder so that atomised diesel fuel injected into the combustion chamber ignites. The torque a dies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Singapore Air Show
The Singapore Airshow is a biennial aerospace event held in Singapore, which debuted in 2008. It hosts high-level government and military delegations, as well as senior corporate executives around the world, while serving as a global event for leading aerospace companies and budding players (including start-ups) to make their mark in the international aerospace and defence market. Status Formerly known as Changi International Airshow, the Singapore Airshow was launched as a partnership between Singaporean agencies Civil Aviation Authority of Singapore and the Defence Science and Technology Agency after the relocation of Asian Aerospace from Singapore. The event offers conferences, forums and co-located events. It is cited to be the third largest air show in the world after Le Bourget and Farnborough, as well as Asia's largest air show, although this is disputed by the Dubai Air Show. Venue The selected venue for the permanent site of the Singapore Airshow is situated on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Link
A data link is a means of telecommunications link, connecting one location to another for the purpose of transmitting and receiving digital information (data communication). It can also refer to a set of electronics assemblies, consisting of a transmitter and a receiver (two pieces of data terminal equipment) and the interconnecting data telecommunication circuit. These are governed by a link protocol enabling digital data to be transferred from a data source to a data sink. Types There are at least three types of basic data-link configurations that can be conceived of and used: * Simplex communications, most commonly meaning all communications in one direction only. * Half-duplex communications, meaning communications in both directions, but not both ways simultaneously. * Duplex (telecommunications), Duplex communications, communications in both directions simultaneously. Aviation In civil aviation, a data-link system (known as Controller Pilot Data Link Communications) is use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Line-of-sight Propagation
Line-of-sight propagation is a characteristic of electromagnetic radiation or acoustic wave propagation which means waves can only travel in a direct visual path from the source to the receiver without obstacles. Electromagnetic transmission includes light emissions traveling in a straight line. The rays or waves may be diffracted, refracted, reflected, or absorbed by the atmosphere and obstructions with material and generally cannot travel over the horizon or behind obstacles. In contrast to line-of-sight propagation, at low frequency (below approximately 3 MHz) due to diffraction, radio waves can travel as ground waves, which follow the contour of the Earth. This enables AM radio stations to transmit beyond the horizon. Additionally, frequencies in the shortwave bands between approximately 1 and 30 MHz, can be refracted back to Earth by the ionosphere, called skywave or "skip" propagation, thus giving radio transmissions in this range a potentially global reach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Target Acquisition
Target acquisition is the detection and identification of the location of a target in sufficient detail to permit the effective employment of lethal and non-lethal means. The term is used for a broad area of applications. A "target" here is an entity or object considered for possible engagement or other action (see Targeting). Targets include a wide array of resources that an enemy commander can use to conduct operations including mobile and stationary units, forces, equipment, capabilities, facilities, persons and functions. It may comprise target acquisition, Joint Targeting or Information Operations. Technically target acquisition may just denote the process of a weapon system to decide which object to lock on to, as opposed to surveillance on one and target tracking on the other side; for example in an anti-aircraft system. History Target acquisition under the doctrines of the Cold War The Cold War was a period of global Geopolitics, geopolitical rivalry betwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar
Radar is a system that uses radio waves to determine the distance ('' ranging''), direction ( azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track aircraft, ships, spacecraft, guided missiles, motor vehicles, map weather formations, and terrain. The term ''RADAR'' was coined in 1940 by the United States Navy as an acronym for "radio detection and ranging". The term ''radar'' has since entered English and other languages as an anacronym, a common noun, losing all capitalization. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwave domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. Radio waves (pulsed or continuous) from the transmitter reflect off the objects and return to the receiver, giving ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ELINT
Signals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of ''signals'', whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication (electronic intelligence—abbreviated to ELINT). As classified and sensitive information is usually encrypted, signals intelligence may necessarily involve cryptanalysis (to decipher the messages). Traffic analysis—the study of who is signaling to whom and in what quantity—is also used to integrate information, and it may complement cryptanalysis. History Origins Electronic interceptions appeared as early as 1900, during the Boer War of 1899–1902. The British Royal Navy had installed wireless sets produced by Marconi on board their ships in the late 1890s, and the British Army used some limited wireless signalling. The Boers captured some wireless sets and used them to make vital transmissions. Since the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
