Used by ATC for establishing identification, control and separation using a target depicted on an air traffic control facility’s video display that has met the relevant safety standards for operational use and received from one, or a combination, of the following surveillance sources: 1. Radar (See RADAR.)

1. ADS‐B (See AUTOMATIC DEPENDENT SURVEILLANCE-BROADCAST.)
2. WAM (See WIDE AREA MULTILATERATION.)

Source FAA Pilot/Controller Glossary · checked 2026-08-25