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Precision approach radar or PAR is a type of radar guidance system designed to provide lateral and vertical guidance to an aircraft pilot for landing, until the landing threshold is reached. [1] Controllers monitoring the PAR displays observe each aircraft 's position and issue instructions to the pilot that keep the aircraft on course and ...
On the two meter band, the most common directional antennas used by competitors are two or three element Yagi antennas made from flexible steel tape. This kind of antenna has a cardioid receiving pattern , which means that it has one peak direction where the received signal will be the strongest, and a null direction, 180° from the peak, in ...
The AN/FRD-10 is a United States Navy circularly disposed antenna array (CDAA), built at a number of locations during the Cold War for high frequency radio direction finding and signals intelligence. In the Joint Electronics Type Designation System , FRD stands for fixed ground, radio, direction finding. 14 sites were originally constructed as ...
A beam waveguide antenna is a type of complicated Cassegrain antenna with a long radio wave path to allow the feed electronics to be located at ground level. It is used in very large steerable radio telescopes and satellite ground antennas, where the feed electronics are too complicated and bulky, or requires too much maintenance and alterations, to locate on the dish; for example those using ...
Q-par Angus was a designer and manufacturer of microwave and RF antennas for commercial and defense use; in May 2013 the company was acquired by Solid State PLC. [ 1 ] The company was formed in 1973 in Birmingham, UK, by Dr Richard Holliday and his wife Jenny Holliday.
Work on PAR-2 in Montana stopped, and the partially complete building stands to this day. [23] Major construction on PAR-1 was completed on 21 August 1972, and test operations commenced. Antenna alignment was completed in August 1973, and the first successful tracking of a satellite and a radio star took place that month.
±10 degrees / ± 30 degrees / ± 60 degrees The AN/APG-68 radar is a long range (maximum detection range 80 kilometres [50 mi]) [ 2 ] Pulse-Doppler radar designed by Westinghouse (now Northrop Grumman ) to replace AN/APG-66 radar in the General Dynamics F-16 Fighting Falcon .
AN/TPS-70 is a mobile rotating S band phased array 3D radar produced by Westinghouse (Northrop Grumman). [1] It can track 500 targets, displaying target range, height, azimuth, identification friend or foe (IFF) information from an altitude of 0 to 100,000 feet (30,000 meters) to a maximum range of 240 nautical miles (440 kilometres).