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Homing Bomb System
Homing may refer to: Guidance *Guidance system, a device or group of devices used to navigate a ship, aircraft, missile, rocket, satellite, or other craft **Homing (missile guidance) ***Infrared homing, a passive missile guidance system which uses the emission from a target of infrared electromagnetic radiation ***Semi-active radar homing, a common type of missile guidance system for longer-range air-to-air and surface-to-air missile systems ***Active radar homing, a missile guidance method in which a guided missile uses a radar transceiver to find and track its target autonomously ***Homing torpedo, "fire and forget" torpedoes can use passive or active guidance *Acoustic homing, a system which uses sound to guide a moving object *Homing (biology), the inherent ability of an animal to navigate towards an original location through unfamiliar areas **Homing pigeon, a variety of domestic pigeon bred to find its way home over extremely long distances *Homing beacon, sometimes homer, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guidance System
A guidance system is a virtual or physical device, or a group of devices implementing a controlling the movement of a ship, aircraft, missile, rocket, satellite, or any other moving object. Guidance is the process of calculating the changes in position, velocity, altitude, and/or rotation rates of a moving object required to follow a certain trajectory and/or altitude profile based on information about the object's state of motion. A guidance system is usually part of a Guidance, navigation and control system, whereas navigation refers to the systems necessary to calculate the current position and orientation based on sensor data like those from compasses, GPS receivers, Loran-C, star trackers, inertial measurement units, altimeters, etc. The output of the navigation system, the navigation solution, is an input for the guidance system, among others like the environmental conditions (wind, water, temperature, etc.) and the vehicle's characteristics (i.e. mass, control system avail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homing (missile Guidance)
Missile guidance refers to a variety of methods of guiding a missile or a guided bomb to its intended target. The missile's target accuracy is a critical factor for its effectiveness. Guidance systems improve missile accuracy by improving its Probability of Guidance (Pg). These guidance technologies can generally be divided up into a number of categories, with the broadest categories being "active", "passive", and "preset" guidance. Missiles and guided bombs generally use similar types of guidance system, the difference between the two being that missiles are powered by an onboard engine, whereas guided bombs rely on the speed and height of the launch aircraft for propulsion. History The concept of unmanned guidance originated at least as early as World War I, with the idea of remotely guiding an airplane bomb onto a target, such as the systems developed for the R.F.C. World War I Drone Weapons, first powered drones by Archibald Low (The Father of Radio Guidance). In World War ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infrared Homing
Infrared homing is a passive weapon guidance system which uses the infrared (IR) light emission from a target to track and follow it seamlessly. Missiles which use infrared seeking are often referred to as "heat-seekers" since infrared is radiated strongly by hot bodies. Many objects such as people, vehicle engines and aircraft generate and emit heat and so are especially visible in the infrared wavelengths of light compared to objects in the background. Infrared seekers are passive devices, which, unlike radar, provide no indication that they are tracking a target. That makes them suitable for sneak attacks during visual encounters or over longer ranges when they are used with a forward looking infrared or similar cuing system. Heat-seekers are extremely effective: 90% of all United States air combat losses over the past 25 years have been caused by infrared-homing missiles. They are, however, subject to a number of simple countermeasures, most notably by dropping flares beh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semi-active Radar Homing
Semi-active radar homing (SARH) is a common type of missile guidance system, perhaps the most common type for longer-range Air-to-air missile, air-to-air and surface-to-air missile systems. The name refers to the fact that the missile itself is only a passive radar, passive detector of a radar signal—Radar illumination, provided by an external ("offboard") source—as it reflects off the target (in contrast to active radar homing, which uses an active radar transceiver). Semi-active missile systems use bistatic radar, bistatic continuous-wave radar. The NATO Multiservice tactical brevity code, brevity code for a semi-active radar homing missile launch is Fox (code word), Fox One. Concept The basic concept of SARH is that since almost all detection and tracking systems consist of a radar system, duplicating this hardware on the missile itself is redundant. The weight of a transmitter reduces the range of any flying object, so passive systems have greater reach. In addition, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Radar Homing
Active radar homing (ARH) is a missile guidance method in which a missile contains a radar transceiver (in contrast to semi-active radar homing, which uses only a receiver) and the electronics necessary for it to find and track its target autonomously. The NATO brevity code for an air-to-air active radar homing missile launch is fox three. Advantages There are two major advantages to active radar homing: * As the missile is tracking the target it is going to be much closer to the target than the launching platform during the terminal phase, thus the missile's tracking can be much more accurate and better resistant to electronic countermeasures. Active radar homing missiles have some of the best kill probabilities, along with missiles employing track-via-missile guidance. * Because the missile is totally autonomous during the terminal phase, the launch platform does not need to have its radar enabled at all during this phase, and in the case of a mobile launching platform ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homing Torpedo
A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such a device was called an automotive, automobile, locomotive, or fish torpedo; colloquially a ''fish''. The term ''torpedo'' originally applied to a variety of devices, most of which would today be called mines. From about 1900, ''torpedo'' has been used strictly to designate a self-propelled underwater explosive device. While the 19th-century battleship had evolved primarily with a view to engagements between armored warships with large-caliber guns, the invention and refinement of torpedoes from the 1860s onwards allowed small torpedo boats and other lighter surface vessels, submarines/submersibles, even improvised fishing boats or frogmen, and later light aircraft, to destroy large ships without the need of large guns, though some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acoustic Homing
Acoustic homing is a system which uses the acoustic signature (sound) of a target to guide a moving object, such as a torpedo. Acoustic homing can be either passive or active in nature. Using passive homing, the system is designed to move either toward or away from a sound, and may also be designed to move only toward certain types of sounds to the exclusion of others, while active homing makes use of active sonar. The system emits a sound pulse that reflects off objects and then back to the system, where the system processes the echos to determine the proper response. Method An object can be equipped with two or more acoustic transducers, which function as speakers and microphones. If a transducer receives a sound louder than that received by the other transducer, the object turns in the transducer's direction. If the object is to manoeuvre in three-dimensional space, more than two transducers are needed. Typically, more than three transducers are used, and arrays of over 100 are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homing (biology)
Homing is the inherent ability of an animal to navigate towards an original location (geography), location through unfamiliar areas. This location may be either a home territory, or a breeding spot. Uses Homing abilities can be used to find the way back to home in a wikt:migration, migration. It is often used in reference to going back to a breeding spot seen years before, as in the case of salmon. Homing abilities can also be used to go back to familiar territory when displaced over long distances, such as with the red-bellied newt. True navigation Some animals use true navigation for their homing. This means in familiar areas they will use landmarks such as roads, rivers or mountains when flying, or islands and other landmarks while swimming. However, this only works in familiar territory. Homing pigeons, for example, will often navigate using familiar landmarks, such as roads. Sea turtles will also use landmarks to orient themselves.Avens, L., (2003) "Homing Behavior, Naviga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homing Pigeon
The homing pigeon, also called the mail pigeon or messenger pigeon, is a variety of domestic pigeons (''Columba livia domestica'') derived from the wild rock dove, selective breeding, selectively bred for its ability to find its way home over extremely long distances. The rock dove has an innate homing ability, meaning that it will generally return to its nest using magnetoreception. Flights as long as have been recorded by birds in competitive pigeon racing. Their average flying speed over moderate distances is around and speeds of up to have been observed in top racers for short distances. In 2019 after sixty years a new world record was set in Netherlands for the fastest racing pigeon flight, distance flown 239 kilometers at speed above 143 kilometers per hour. Because of this skill, domesticated pigeons were used to carry messages as messenger pigeons. They are usually referred to as "pigeon post" if used in post service, or "war pigeon" during wars. Until the introducti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homing Beacon
An emergency locator beacon is a radio beacon, a portable battery powered radio transmitter, used to locate airplanes, vessels, and persons in distress and in need of immediate rescue. Various types of emergency locator beacons are carried by aircraft, ships, vehicles, hikers and cross-country skiers. In case of an emergency, such as the aircraft crashing, the ship sinking, or a hiker becoming lost, the transmitter is deployed and begins to transmit a continuous radio signal, which is used by search and rescue teams to quickly find the emergency and render aid. The purpose of all emergency locator beacons is to help rescuers find survivors within the so-called "golden day", the first 24 hours following a traumatic event, during which the majority of survivors can usually be saved. Beacon types COSPAS-SARSAT 406 MHz Distress Beacons Cospas-Sarsat is an international humanitarian consortium of governmental and private agencies which acts as a worldwide dispatcher for search ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homing (hematopoietic)
Homing is the phenomenon whereby cells migrate to the organ of their origin. By homing, transplanted hematopoietic cells are able to travel to and engraft (establish residence) in the bone marrow. Various chemokines and receptors are involved in the homing of hematopoietic stem cells. Sites * Bone marrow * Lymph nodes * Skin Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation. Other cuticle, animal coverings, such as the arthropod exoskeleton, have diffe ... References {{Reflist Hematology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homing (horse)
Homing (foaled 1975) was a British Thoroughbred racehorse and sire. Although he never won at Group One race, he established himself as the leading horse in Europe over one mile in 1978. His early form was moderate, but in the autumn of his three-year-old season he made dramatic improvement to record wide margin victories in the Prix du Rond Point and the Queen Elizabeth II Stakes. He was retired from racing at the end of the season, having won six of his fourteen races, and had modest success as a breeding stallion. Background Homing was a bay horse with a white star and a white sock on his right hind leg bred by his owner Lord Rotherwick. He was sired by Habitat, an American-bred, British-raced miler who became one of the leading European stallions of the 1970s and 1980s. His other progeny included Habibti, Marwell, Rose Bowl, Flying Water and Sigy and he was the British Champion broodmare sire on three occasions. Homing's dam, Heavenly Thought was a successful racemare who ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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