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Radar is an acronym for "radio detection and ranging", ... Research on Adverse Drug Events and Reports, United States, manages alerts for adverse reactions to drugs;
The acronym RADAR (for RAdio Detection And Ranging) was coined by the U.S. Navy in 1940, and the subsequent name "radar" was soon widely used. The XAF and CXAM search radars were designed by the Naval Research Laboratory, and were the first operational radars in the US fleet, produced by RCA.
The Naval Research Laboratory has a long history of spacecraft development. This includes the second, fifth and seventh American satellites in Earth orbit, the first solar-powered satellite, the first surveillance satellite, the first meteorological satellite and the first GPS satellite.
Radar is a system that uses radio waves to determine the distance (), direction (azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method [1] used to detect and track aircraft, ships, spacecraft, guided missiles, motor vehicles, map weather formations, and terrain.
The acronym RADAR (for Radio Detection And Ranging) was coined by the U.S. Navy in 1940, and the term "radar" became widely used. While the benefits of operating in the microwave portion of the radio spectrum were known, transmitters for generating microwave signals of sufficient power were unavailable; thus, all early radar systems operated at ...
The Signal Corps Laboratories (SCL) was a research installation under the command of the U.S. Army Signal Corps. Headquartered at Fort Monmouth, New Jersey, SCL directed research on electronics, radar, and communication systems for the U.S. Army. Throughout its history, SCL operated under many names as the organizational structure of the Signal ...
According to the Air Force Institute of Technology's Center for MASINT Studies and Research, MASINT is split into six major disciplines: electro-optical, nuclear, radar, geophysical, materials, and radiofrequency. [2] Electro-optical MASINT. Airborne electro-optical missile tracking MASINT; Tactical counter-artillery sensors; Infrared MASINT
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 .