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  2. Airport surveillance radar - Wikipedia

    en.wikipedia.org/wiki/Airport_surveillance_radar

    An airport surveillance radar (ASR) is a radar system used at airports to detect and display the presence and position of aircraft in the terminal area, the airspace around airports. It is the main air traffic control system for the airspace around airports. At large airports it typically controls traffic within a radius of 60 miles (96 km) of ...

  3. Air Route Surveillance Radar - Wikipedia

    en.wikipedia.org/wiki/Air_Route_Surveillance_Radar

    L band. Range. 290 miles. The Air Route Surveillance Radar is a long-range radar system. It is used by the United States Air Force and the Federal Aviation Administration to control airspace within and around the borders of the United States. The ARSR-4 is the FAA's most recent (late 1980s, early 1990s) addition to the "Long Range" series of ...

  4. Terminal radar service area - Wikipedia

    en.wikipedia.org/wiki/Terminal_radar_service_area

    Terminal radar service area. In United States aviation, a terminal radar service area (TRSA) is a delimited airspace where radar and air traffic control services are made available to pilots flying under instrument flight rules or (optionally) visual flight rules, to maintain aircraft separation. TRSAs most often surround busy U.S. airports.

  5. Northern California TRACON - Wikipedia

    en.wikipedia.org/wiki/Northern_California_TRACON

    Northern California TRACON (NCT) (Terminal Radar Approach Control), or NorCal TRACON for short (pronounced "nor-cal tray-con"), also known as NorCal Approach, is an air traffic control facility that provides safety alerts, separation, and sequencing of air traffic arriving, departing, and transiting the airspace and airports in Northern California, United States.

  6. Surface movement radar - Wikipedia

    en.wikipedia.org/wiki/Surface_movement_radar

    Surface movement radar (SMR) is used to detect aircraft and vehicles on the surface of an airport. It is used by air traffic controllers to supplement visual observations. It may also be used at night time and during low visibility to monitor the movement of aircraft and vehicles. Surface movement radar is the term accepted by ICAO, but it has ...

  7. Tethered Aerostat Radar System - Wikipedia

    en.wikipedia.org/wiki/Tethered_Aerostat_Radar_System

    Tethered Aerostat Radar System in New Mexico. The first aerostats were assigned to the United States Air Force in December 1980 at Cudjoe Key, Florida. During the 1980s, the U.S. Customs Service operated a network of aerostats to help counter illegal drug trafficking. Their first site was built at High Rock, Grand Bahama in 1984.