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Radar Configurations And Types
This is a list of different types of radar. Detection and search radars Search radars scan great volumes of space with pulses of short radio waves. They typically scan the volume two to four times a minute. The radio waves are usually less than a meter long. Ships and planes are metal, and reflect radio waves. The radar measures the distance to the reflector by measuring the time of the round trip from emission of a pulse to reception, dividing this by two, and then multiplying by the speed of light. To be accepted, the received pulse has to lie within a period of time called the ''range gate''. The radar determines the direction because the short radio waves behave like a search light when emitted from the reflector of the radar set's antenna. Search *Early-warning radar, Early Warning (EW) Radar Radar Systems **Ground-controlled interception, Ground Control Intercept (GCI) Radar **Airborne early warning and control, Airborne Early Warning (AEW) ** Airborne ground surveillanc ... [...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] |
Surface-to-surface Missile
A surface-to-surface missile (SSM) is a missile designed to be launched from the ground or the sea and strike targets on land or at sea. They may be fired from hand-held or vehicle mounted devices, from fixed installations, or from a ship. They are often powered by a rocket engine or sometimes fired by an explosive charge, since the launching platform is typically stationary or moving slowly. They usually have fins and/or wings for lift and stability, although hyper-velocity or short-ranged missiles may use body lift or fly a ballistic trajectory. The first operational surface-to-surface missile was the V-1 flying bomb, it was powered by a pulsejet engine. Contemporary surface-to-surface missiles are usually guided. An unguided surface-to-surface missile is usually referred to as a rocket (for example, an RPG-7 or M72 LAW is an anti-tank rocket), whereas a BGM-71 TOW or AT-2 Swatter is an anti-tank guided missile. Examples of surface-to-surface missile include the MGM-140 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AN/FPS-14
The AN/FPS-14 was a medium-range search Radar used by the United States Air Force Air Defense Command. This medium-range search radar was designed and built by Bendix as a SAGE system gap-filler radar to provide low-altitude coverage. Operating in the S-band at a frequency between 2700 and 2900 MHz, the AN/FPS-14 could detect at a range of 65 miles. The system was deployed in the late 1950s and 1960s at unmanned radar facilities (called "Gap Fillers") designed to fill the low-altitude gaps between manned long-range radar stations. Gaps in coverage existed due to the curvature of the Earth, mountains, hills, valleys, rivers, and so forth. The typical unmanned gap-filler radar annex consisted of a small L-shaped cinder-block building, with the radar equipment and the data-transmission equipment in one section and one or more diesel generators in the other section. These unmanned gap-filler sites generally had a three-legged radar tower about 85 feet tall where the AN/ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MIM-23 Hawk
The Raytheon MIM-23 HAWK ("Homing All the Way Killer") is an American medium-range surface-to-air missile. It was designed to be a much more mobile counterpart to the MIM-14 Nike Hercules, trading off range and altitude capability for a much smaller size and weight. Its low-level performance was greatly improved over Nike through the adoption of new radars and a continuous wave semi-active radar homing guidance system. It entered service with the US Army in 1959. In 1971 it underwent a major improvement program as the Improved Hawk, or I-Hawk, which made several improvements to the missile and replaced all of the radar systems with new models. Improvements continued throughout the next twenty years, adding improved electronic counter-countermeasures, ECCM, a potential home-on-jam feature, and in 1995, a new warhead that made it capable against short-range tactical ballistic missiles. ''Jane's Information Group, Jane's'' reported that the original system's single shot kill probab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AN/FPS-16
The AN/FPS-16 is a highly accurate ground-based monopulse single object tracking radar (SOTR), used extensively by the NASA crewed space program, the U.S. Air Force and the U.S. Army. The accuracy of Radar Set AN/FPS-16 is such that the position data obtained from point-source targets has azimuth and elevation angular errors of less than 0.1 milliradian (approximately 0.006 degree) and range errors of less than with a signal-to-noise ratio of 20 decibels or greater. Classification of radar systems In accordance with the Joint Electronics Type Designation System (JETDS), all U.S. military electronics are assigned a unique identifying alphanumeric designation. The letters “''AN''” (for Army-Navy) are placed ahead of a three-letter code. *The first letter of the three-letter code denotes the type of platform hosting the electronic device, where ''A'' is used for Aircraft, ''F'' for Fixed (land-based), ''S'' for Ship-mounted, ''T'' for Ground transportable, etc. *The second lette ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Man Portable Radar
Man-portable radar is a lightweight surveillance radar system that does not require vehicle support to transport or operate. Man-portable radars were developed to introduce radar to remote areas where vehicle support is not feasible. Examples GO 12 "BAT" The Ground Observer 12 (GO 12) is a medium-range pulse-doppler radar for ground and near ground surveillance. The system is made in Ditzingen, Germany. The main component, the sensor unit, only weighs 17 kg with a volume of only 28 L, which makes it a highly mobile and compact system. The GO 12 uses mechanical scan technology with a continuous coverage of an angle of > 360 °. Its capability to use a wide range of frequencies provides the user with options against electronic counter measures (jamming). The GO 12 was introduced to the French Defense Forces under the name "Murin" (bat) in 2019 and immediately sent into combat to the Sahel region, where it performed stunningly well. It was certified to be air-dropped by the Fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Color
The Red Color (, transl.: ''Tzeva Adom,'' i.e. ''code red'') is an early-warning radar system originally installed by the Israel Defense Forces in several towns surrounding the Gaza Strip to warn civilians of imminent attack by rockets (usually Qassam rockets). Outside of areas originally serviced by the Red Color system, standard air raid sirens were used to warn of rocket attacks. The system originally operated in areas around the so-called Gaza envelope, including in Sderot. When the signature of a rocket launch is detected, the system automatically activates the public broadcast warning system in nearby Israeli communities and military bases. A recorded female voice, intoning the Hebrew words for Red Color ("Tzeva Adom"), is broadcast 4 times. The entire program is repeated until all rockets have impacted and no further launches are detected. The system was installed in Ashkelon between July 2005 and April 2006. Up to June 2006, the announcement was called Red Dawn (, tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perimeter Surveillance Radar
Perimeter surveillance radar (PSR) is a class of radar sensors that monitor activity surrounding or on critical infrastructure areas such as airports, seaports, military installations, national borders, refineries and other critical industry and the like. Such radars are characterized by their ability to detect movement at ground level of targets such as an individual walking or crawling towards a facility. Such radars typically have ranges of several hundred metres to over 10 kilometres. Alternate technologies include laser-based systems. These have the potential for very high target position accuracy, however they are less effective in the presence of fog and other obscurants. Characteristics PSR's usually have the following required characteristics: *No operator required: The radar autonomously detects movement in a defined area, tracks those targets and raises an alarm if the targets cross into alarm areas. *Export of target data: The radar not only has its own dedicated dis ... [...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] |
Side Looking Airborne Radar
Side-looking airborne radar (SLAR) is an aircraft, or satellite-mounted imaging radar pointing perpendicular to the direction of flight (hence ''side-looking''). A Squint (antenna), squinted (nonperpendicular) mode is also possible. SLAR can be fitted with a standard antenna (real aperture radar) or an antenna using Synthetic aperture radar, synthetic aperture. The platform of the radar moves in direction of the x-axis. The radar "looks" with the looking angle ''θ'' (or so called off-nadir angle). The angle ''α'' between x-axis and the line of sight (LOS) is called cone angle, the angle ''φ'' between the x-axis and the projection of the line of sight to the (x; y)-plane is called azimuth angle. Cone- and azimuth angle are related by cos''α'' = cos''φ'' ∙ cos''ε''. On the earth surface the wave comes in at the (nominal ellipsoidal) incident angle ''β'' with respect to the vertical axis at this point. (In some publications the incident angle is denomin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counter-battery Radar
A counter-battery radar or weapon tracking radar is a radar system that detects artillery projectiles fired by one or more guns, howitzers, Mortar (weapon), 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 radar t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Symbol - Friendly Unit (Black&White 1
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. Militaries are typically authorized and maintained by a sovereign state, with their members identifiable by a distinct military uniform. They may consist of one or more military branches such as an army, navy, air force, space force, marines, or coast guard. The main task of a military is usually defined as defence of their state and its interests against external armed threats. In broad usage, the terms "armed forces" and "military" are often synonymous, although in technical usage a distinction is sometimes made in which a country's armed forces may include other paramilitary forces such as armed police. Beyond warfare, the military may be employed in additional sanctioned and non-sanctioned functions within the state, including internal security threats, crowd control, promotion of political agendas, emergency services and reconstruction, pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
