Radar (disambiguation).
Irada For further use, see Radar (disambiguation). Radar (radio detection and calibration) [1] [2] is a diagnostic program that uses radio waves to determine the distance (width), angle, and radial speed of site-related objects. It can be used to detect planes, ships, spacecraft, guided missiles, cars, climate formation, and land. A radar system consists of a transmitter that generates electromagnetic radios or a microwaves domain, a transmitter, a receiver (usually the same rod to transmit and receive) and a receiver and processor to detect the properties of the object (s). . Radio waves (beat or continuous) emit from the transmitter to the object and return to the receiver, providing information about the location and speed of the object. The long-distance radar antenna, known as ALTAIR, is used to detect and track space objects in accordance with the ABM test at the Ronald Reagan Test Site at Kwajalein Atoll. Long-distance radar antenna, used to track space objects and throwing arrows. Israeli military radar is a type of radar used to control air traffic control. The antenna rotates at a constant speed, sweeping the local airspace through a small dry line shaped like a fan, so that it can see a plane at all altitudes. Radar of the type used for flight detection. It circles slowly, sweeping the air space with a small stick. The radar was secretly developed for use in several countries before and during World War II.
A major development was the cavity magnetron in the United Kingdom, which allowed for the construction of smaller systems with lower meter adjustments. The term RADAR was coined in 1940 by the United States Navy as an acronym for "radio discovery and departure". [3] [4] The word radar has since been introduced into English and other languages as a common noun, losing all uppercase letters. During the 1954-5 RAF RADAR studies at Yatesbury Training Camp a "radio azimuth direction and rangeing" was proposed. air defense systems, archery systems, marine radars to detect land and other ships, anti-collision systems, maritime systems, outdoor monitoring and assembly systems, climate monitoring, altitude control systems and aircraft, detection systems missiles aimed at missiles, self-propelled vehicles, and ground radar for ground viewing. High-tech radar systems are associated with digital signal processing, machine learning and are able to extract useful information at very high audio levels.
Some systems such as radar use other components of the electromagnetic spectrum. One example is LIDAR, which uses large infrared light from lasers instead of radio waves. With the advent of non-motorized vehicles, the radar is expected to assist the self-propelled platform to monitor the surrounding area, thus preventing unwanted incidents. [5] Edit history Topic: Radar history Preliminary Test Edit Back in 1886, German physicist Heinrich Hertz showed that radio waves could be detected in solid objects. In 1895, Alexander Popov, a physicist at the Imperial Russian Navy in Kronstadt, developed a device that used a combined tube to detect distant lightning strikes. The following year, add a spark-gap transmitter. In 1897, while examining these communication devices between two ships in the Baltic Sea, he noticed a disturbing rhythm caused by the passage of a third ship. In his report, Popov wrote that the situation could be used to obtain things, but he did nothing about it. [6] German inventor Christian Hülsmeyer was the first to use radio waves to detect "the presence of distant metal objects". In 1904, he demonstrated the possibility of seeing a ship in the thick fog, but not its distance from the sender.
[7] He obtained a patent [8] for his diagnostic device in April 1904 and later a patent [9] for amendments related to measuring the distance to the ship. He also acquired a British patent on September 23, 1904 [10] for a complete radar system, which he called the telemobiloscope. It operates at a wavelength of 50 cm and a cracked radar signal was created with a spark-gap. His plan had already used the horn-horned set and was presented to German military officers in practical trials in Cologne and the port of Rotterdam but was rejected. [11] In 1915, Robert Watson-Watt used radio technology to give advance warning to airmen [12] and in the mid-1920s continued to lead the UK research center to make significant progress using radio techniques, including ionosphere exploration and lightning detection. in long distances. Through his lightning test, Watson-Watt became an expert in the use of radio guidance before turning his research into shortwave transmissions. Seeking a qualified recipient of such courses, he told "new boy" Arnold Frederic Wilkins to do a comprehensive review of the available shortwave units. Wilkins could choose the General Post Office model after realizing the textbook definition of its "blurred" effect (the common term for disruption at the time) when the plane was flying high. Across the Atlantic in 1922, after installing a dumping machine and receiver on opposite sides of the Potomac River, U.S. Army researchers A. Hoyt Taylor and Leo C. Young discovered that ships passing through the frame route caused the accepted signal to come in and out. Taylor submitted a report, suggesting that the incident could have been used to detect the presence of ships in an undisclosed location, but the Navy did not proceed immediately. Eight years later, Lawrence A. Hyland at the Naval Research Laboratory (NRL) saw similar effects on the decline of passing flights; this revelation led to the inclusion of a patent [13] and a proposal
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