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RADAR− a Device That Provides Information on Range, Azimuth, And

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RADAR− a Device That Provides Information on Range, Azimuth, And 6/17/21 Pilot/Controller Glossary R RADAR− A device that provides information on RADAR APPROACH− An instrument approach range, azimuth, and/or elevation of objects by procedure which utilizes Precision Approach Radar measuring the time interval between transmission (PAR) or Airport Surveillance Radar (ASR). and reception of directional radio pulses and (See AIRPORT SURVEILLANCE RADAR.) correlating the angular orientation of the radiated (See INSTRUMENT APPROACH antenna beam or beams in azimuth and/or elevation. PROCEDURE.) (See PRECISION APPROACH RADAR.) a. Primary Radar− A radar system in which a (See SURVEILLANCE APPROACH.) minute portion of a radio pulse transmitted from a site (See ICAO term RADAR APPROACH.) is reflected by an object and then received back at that (Refer to AIM.) site for processing and display at an air traffic control facility. RADAR APPROACH [ICAO]− An approach, executed by an aircraft, under the direction of a radar b. Secondary Radar/Radar Beacon (ATCRBS) A − controller. radar system in which the object to be detected is fitted with cooperative equipment in the form of a RADAR APPROACH CONTROL FACILITY− A radio receiver/transmitter (transponder). Radar terminal ATC facility that uses radar and nonradar pulses transmitted from the searching transmitter/re- capabilities to provide approach control services to ceiver (interrogator) site are received in the aircraft arriving, departing, or transiting airspace cooperative equipment and used to trigger a controlled by the facility. distinctive transmission from the transponder. This (See APPROACH CONTROL SERVICE.) reply transmission, rather than a reflected signal, is a. Provides radar ATC services to aircraft then received back at the transmitter/receiver site for operating in the vicinity of one or more civil and/or processing and display at an air traffic control facility. military airports in a terminal area. The facility may (See COOPERATIVE SURVEILLANCE.) provide services of a ground controlled approach (See INTERROGATOR.) (GCA); i.e., ASR and PAR approaches. A radar (See NON−COOPERATIVE SURVEILLANCE.) approach control facility may be operated by FAA, USAF, US Army, USN, USMC, or jointly by FAA (See TRANSPONDER.) and a military service. Specific facility nomencla- (See ICAO term RADAR.) tures are used for administrative purposes only and (Refer to AIM.) are related to the physical location of the facility and the operating service generally as follows: RADAR [ICAO]− A radio detection device which 1. provides information on range, azimuth and/or Army Radar Approach Control (ARAC) elevation of objects. (US Army). 2. a. Radar Air Traffic Control Facility (RATCF) Primary Radar− Radar system which uses (USN/FAA and USMC/FAA). reflected radio signals. 3. Radar Approach Control (RAPCON) b. Secondary Radar− Radar system wherein a (USAF/FAA, USN/FAA, and USMC/FAA). radio signal transmitted from a radar station initiates 4. Terminal Radar Approach Control the transmission of a radio signal from another (TRACON) (FAA). station. 5. Airport Traffic Control Tower (ATCT) RADAR ADVISORY− The provision of advice and (FAA). (Only those towers delegated approach information based on radar observations. control authority.) (See ADVISORY SERVICE.) RADAR ARRIVAL− An aircraft arriving at an airport served by a radar facility and in radar contact RADAR ALTIMETER− with the facility. (See RADIO ALTIMETER.) (See NONRADAR.) PCG R−1 .
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