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E-8 Joint STARS
The Northrop Grumman E-8 Joint Surveillance Target Attack Radar System (Joint STARS) is a retired United States Air Force (USAF) airborne ground surveillance, battle management and command and control aircraft. It tracked ground vehicles and some aircraft, collected imagery, and relayed tactical pictures to ground and air theater commanders. Until its retirement in 2023 the aircraft was operated by both active duty USAF and Air National Guard units, with specially trained U.S. Army personnel as additional flight crew. Development Joint STARS evolved from separate U.S. Army and Air Force (USAF) programs to develop technology to detect, locate and attack enemy armor at ranges beyond the front line of a battle. August 2013. In 1982, the programs were merged and the USAF became the lead agent. The concept and sensor technology for the E-8 was developed and tested on the Tacit Blue experimental aircraft. The prime contract was awarded to Grumman Aerospace Corporation in Septe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is an affinity group for contributors with shared goals within the Wikimedia movement. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within Wikimedia project, sibling projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by ''Smithsonian Magazine, Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AN/APG-76
The AN/APG-76 radar is a pulse Doppler Ku band multi-mode radar developed and manufactured by Northrop Grumman. AN/APQ-92 The first radar of the radar family AN/APG-76 belongs to is AN/APQ-92, which equipped A-6A. AN/APQ-92 is a search and navigational radar, with function called search radar terrain clearance (SRTC) to generate a synthetic terrain display on the pilot's Vertical Display Indicator (VDI), which is a large cathode ray tube (CRT) display in the center of the pilot's console, right under the gun sight. The display showed vertical terrain development in a 53 degree by 26 degree window about the projected flight path. If the Intruder was heading for a valley between two hills, the pilot would see return generally in the shape of two hills (one on either side of the display), with a curving "V" notch in the center between them. The limitation of SRTC is in its inability to detect smaller artificial features - like cables suspend across a valley. AN/APQ-92 is part of DIA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battlefield Airborne Communications Node
The Battlefield Airborne Communications Node (BACN) is a United States Air Force (USAF) airborne communications Repeater, relay and Gateway (telecommunications), gateway system carried by the unmanned Northrop Grumman RQ-4 Global Hawk, EQ-4B and the manned Bombardier Global 6000, Bombardier E-11A aircraft. BACN enables Real-time computing, real-time information flow across the battlespace between similar and dissimilar Tactical Data Links, tactical data link and voice systems through relay, bridging, and data translation in Line-of-sight propagation, line-of-sight and Non-line-of-sight propagation, beyond-line-of-sight situations. Its ability to translate between dissimilar communications systems allows them to interoperability, interoperate without modification. Because of its flexible Military deployment, deployment options and ability to operate at high altitudes, BACN can enable air and surface forces to overcome communications difficulties caused by mountains, other rough t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multi-Platform Radar Technology Insertion Program
The Multi-Platform Radar Technology Insertion Program (MP-RTIP), is a U.S. Air Force project led by contractor Northrop Grumman to develop the next generation of airborne air-to-air and air-to-ground radar systems. While initially planned to come in three sizes for multiple platforms, the MP-RTIP is currently intended only for the RQ-4B Global Hawk UAV.Northrop-Grumman press release, May 3, 2004, accessed April 20, 2007 Overview The MP-RTIP is a "modular, radar system" designed to be scaled in size in order to fit on board di ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GMTI JSTARS
Moving target indication (MTI) is a mode of operation of a radar to discriminate a target against the clutter. It describes a variety of techniques used for finding moving objects, like an aircraft, and filter out unmoving ones, like hills or trees. It contrasts with the modern stationary target indication (STI) technique, which uses details of the signal to directly determine the mechanical properties of the reflecting objects and thereby find targets whether they are moving or not. Early MTI systems generally used an acoustic delay line to store a single pulse of the received signal for exactly the time between broadcasts (the pulse repetition frequency). This stored pulse will be sent to the display along with the next received pulse. The result was that the signal from any objects that did not move mixed with the stored signal and became muted out. Only signals that changed, because they moved, remained on the display. These were subject to a wide variety of noise effects that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doppler Effect
The Doppler effect (also Doppler shift) is the change in the frequency of a wave in relation to an observer who is moving relative to the source of the wave. The ''Doppler effect'' is named after the physicist Christian Doppler, who described the phenomenon in 1842. A common example of Doppler shift is the change of pitch heard when a vehicle sounding a horn approaches and recedes from an observer. Compared to the emitted frequency, the received frequency is higher during the approach, identical at the instant of passing by, and lower during the recession. When the source of the sound wave is moving towards the observer, each successive cycle of the wave is emitted from a position closer to the observer than the previous cycle. Hence, from the observer's perspective, the time between cycles is reduced, meaning the frequency is increased. Conversely, if the source of the sound wave is moving away from the observer, each cycle of the wave is emitted from a position farther from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doppler Radar
A Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance. It does this by bouncing a microwave signal off a desired target and analyzing how the object's motion has altered the frequency of the returned signal. This variation gives direct and highly accurate measurements of the radial component of a target's velocity relative to the radar. The term applies to radar systems in many domains like aviation, police radar detectors, navigation, meteorology, etc. Concept Doppler effect The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842, is the difference between the observed frequency and the emitted frequency of a wave for an observer moving relative to the source of the waves. It is commonly heard when a vehicle sounding a siren approaches, passes and recedes from an observer. The received frequency is higher (compared to the emitted frequency) during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synthetic Aperture Radar
Synthetic-aperture radar (SAR) is a form of radar that is used to create two-dimensional images or 3D reconstruction, three-dimensional reconstructions of objects, such as landscapes. SAR uses the motion of the radar antenna over a target region to provide finer spatial resolution than conventional stationary beam-scanning radars. SAR is typically mounted on a moving platform, such as an aircraft or spacecraft, and has its origins in an advanced form of side looking airborne radar (SLAR). The distance the SAR device travels over a target during the period when the target scene is illuminated creates the large ''synthetic'' antenna aperture (the ''size'' of the antenna). Typically, the larger the aperture, the higher the image resolution will be, regardless of whether the aperture is physical (a large antenna) or synthetic (a moving antenna) – this allows SAR to create high-resolution images with comparatively small physical antennas. For a fixed antenna size and orientation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moving Target Indication
Moving target indication (MTI) is a mode of operation of a radar to discriminate a target against the clutter. It describes a variety of techniques used for finding moving objects, like an aircraft, and filter out unmoving ones, like hills or trees. It contrasts with the modern stationary target indication (STI) technique, which uses details of the signal to directly determine the mechanical properties of the reflecting objects and thereby find targets whether they are moving or not. Early MTI systems generally used an acoustic delay line to store a single pulse of the received signal for exactly the time between broadcasts (the pulse repetition frequency). This stored pulse will be sent to the display along with the next received pulse. The result was that the signal from any objects that did not move mixed with the stored signal and became muted out. Only signals that changed, because they moved, remained on the display. These were subject to a wide variety of noise effects th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
E-8 Crewmembers
E8 may refer to: Mathematics * E8, an exceptional simple Lie group with root lattice of rank 8 * E8 lattice, special lattice in R8 * E8 manifold, mathematical object with no smooth structure or topological triangulation * E8 polytope, alternate name for the 421 semiregular (uniform) polytope * Elementary abelian group of order 8 Physics * E8 Theory, term sometimes loosely used to refer to ''An Exceptionally Simple Theory of Everything'' Transport * E-8 Joint STARS, a retired USAF command and control aircraft * EMD E8, 1949 diesel passenger train locomotive * European route E8, part of the international E-road network, running between Tromsø, Norway and Turku, Finland * European walking route E8, a walking route from Ireland to Turkey * HMS E8, 1912 British E class submarine * London Buses route E8, runs between Ealing Broadway station and Brentford * Mikoyan-Gurevich Ye-8, 1962 supersonic jet fighter developed in the Soviet Union * E8, IATA code for the former ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pave Mover Antenna Array, View 1, Prototype For J-STARS Antenna, Norden, 1981-1983 - National Electronics Museum - DSC00429
PAVE is a United States Air Force program identifier relating to electronic systems. Prior to 1979, Pave was said to be a code word for the Air Force unit responsible for the project. ''Pave'' was used as an inconsequential prefix identifier for a wide range of different programs, though backronyms and alternative meanings have been used. For example, in the helicopters Pave Low and Pave Hawk it was said to mean ''Precision Avionics Vectoring Equipment'', but in PAVE PAWS it was said to mean ''Precision Acquisition Vehicle Entry''. PAVE systems * Pave Eagle – Modified Beechcraft Bonanza drone aircraft for low altitude sensor monitoring. * Pave Hawk – Sikorsky HH-60 Pave Hawk special operations and combat search and rescue helicopter. * Pave Nail - OV-10 Bronco with Pave Spot target laser designator pod. * Pave Knife – Ford Aerospace AN/AVQ-10 Pave Knife early laser targeting pod. * Pave Low – Sikorsky MH-53 Pave Low special ops and combat search and rescue helicopter. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
In-flight Refueling
Aerial refueling ( en-us), or aerial refuelling ( en-gb), also referred to as air refueling, in-flight refueling (IFR), air-to-air refueling (AAR), and tanking, is the process of transferring aviation fuel from one aircraft (the tanker) to another (the receiver) while both aircraft are in flight. The two main refueling systems are '' probe-and-drogue'', which is simpler to adapt to existing aircraft and the '' flying boom'', which offers faster fuel transfer, but requires a dedicated boom operator station. The procedure allows the receiving aircraft to remain airborne longer, extending its range or loiter time. A series of air refuelings can give range limited only by crew fatigue/physical needs and engineering factors such as engine oil consumption. Because the receiver aircraft is topped-off with extra fuel in the air, air refueling can allow a takeoff with a greater payload which could be weapons, cargo, or personnel: the maximum takeoff weight is maintained by carrying ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
