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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 ...
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 ...
The AN/TPS-75 is a transportable passive electronically scanned array air search 3D radar produced in the United States. It was originally designated the TPS-43E2. Although the antenna is a radically new design from the TPS-43, the radar van itself, which houses the transmitter, receiver processors, and displays is very similar to the older TPS ...
AN/MPN-25 ITT product that scans the PAR coverage area and capable of scanning 360 degree using the same antenna. The system then process the raw target data to form a data word sending it to a computer display operating on Solaris. It is a 30 nmi (56 km) asr coverage and 20 nmi (37 km) PAR coverage.
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 ...
±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/APG-56 improved AN/APG-30 for North American F-86 Sabre; AN/APG-57 Gould Electronics fire control radar; AN/APG-59 Westinghouse Electric (1886) pulse-Doppler radar for F-4J part of AN/AWG-10; AN/APG-60 Doppler radar that is part of AN/AWG-11 for F-4K; AN/APG-61 fire control radar for F-4M part of AN/AWG-12; AN/APG-63 for F-15 Eagle
For directional antennas, the Yagi antenna is the most widely used as a high gain or "beam" antenna. For television reception, the Yagi is used, as well as the log-periodic antenna due to its wider bandwidth. Helical and turnstile antennas are used for satellite communication since they employ circular polarization.