identification, friend or foe

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Related to Secondary surveillance radar: primary radar, ATCRBS

identification, friend or foe

A device that emits a signal positively identifying it as a friendly. Also called IFF. See also air defense.
References in periodicals archive ?
It has been operationally proven to provide cost-effective coverage where line of sight was impossible and traditional Secondary Surveillance Radar (SSR) systems are impractical.
Classical Secondary Surveillance Radar (SSR) is widely used to support air traffic control operations.
5 million deal with Raytheon for three Monopulse Secondary Surveillance Radar (MSSR) systems.
The ASR-11 provides primary surveillance radar coverage up to 60 miles and secondary surveillance radar coverage up to 120 miles.
As well as a planned new single-centre Air Traffic Control Centre at Ankara, DHMI is also looking at renewing its radar coverage of the country through the purchase of six secondary surveillance radar and three primary surveillance radar.
Primary and secondary surveillance radar (PSR/SSR) (including VHF aircraft transmitters, a radar equipment building and a radar tower)
The contract also includes replacement of the radar site's secondary surveillance radar, used for air traffic control purposes.
Under the contract, Airsys ATM will deliver a STAR 2000 state-of-the-art solid state S-band primary radar, a RSM 970S monopulse secondary surveillance radar and a Eurocat 2000 air traffic control system.
Telephonics also supplies fixed and mobile Monopulse Secondary Surveillance Radar currently in use in several sites throughout China.
The acquisition regards delivery and installation of 2 Terminal Maneuvering Area (TMA) radar systems each consisting of a Primary Surveillance Radar (PSR) and a Monopuls Secondary Surveillance Radar (MSSR) with military functionalities (mode 1 and mode 2).
By replacing the existing Monopulse Secondary Surveillance Radar (MSSR) with WAM, NATS controllers will receive high update rate, precise surveillance at a lower lifecycle cost than a new MSSR.
Elementary Surveillance allows the active transponder to reply to ground-based Secondary Surveillance Radar interrogations supplying air traffic controllers with aircraft identification and altitude.