secondary surveillance radar


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Related to secondary surveillance radar: primary radar, ATCRBS

secondary surveillance radar

[′sek·ən‚der·ē sər′vā·ləns ‚rā‚där]
(navigation)
The secondary radar that operates in conjunction with the airborne transponder of the air-traffic control radar beacon system (ATCRBS).

secondary surveillance radar (SSR)

A radar system that requires complementary aircraft equipment (transponder). The transponder generates a coded reply signal in response to transmissions from the ground station (interrogator). Since this system relies on transponder-generated signals rather than signals reflected from the aircraft, as in primary radar, it offers significant operational advantages, such as increased range and positive identification. The interrogator has a fixed interval of two microseconds between pulses P1 and P2, but the position of P3 is variable. There are four modes, or types, of reply allocated for civil; they are designated A, B, C, and D. All secondary surveillance radars operate on the same frequencies; the interrogation is at 1030 MHz and the transponder reply is at 1090 MHz. It also provides automatic altitude reporting facilities as well as other types of information to the ATC (air traffic control) controller. The three main components of the system are the interrogator, a transponder (fitted in the aircraft), and a radarscope. Also called an air traffic control radar beacon system (ATCRBS).
References in periodicals archive ?
These contracts are indicative of Telephonics' continued expansion into the Asia Pacific civil air traffic management market where we have already installed 11 Air Traffic Management and Secondary Surveillance Radar Systems," states Larry Rytter, President, Command Systems Division.
Sensis WAM will be deployed across Sweden to complement and replace the country's Monopulse Secondary Surveillance Radar (MSSR) infrastructure with technology that is compatible with today's avionics while providing the foundation for the growing use of Automatic Dependent Surveillance - Broadcast (ADS-B).
The contract covers conversion of the German military%s existing monopulse secondary surveillance radar 2000 I (MSSR 2000I) systems to the new Mode 5 standard in multiple steps.
Data from the system will be fed to the ATNS EUROCAT system and fused with primary and secondary surveillance radar information to provide air traffic controllers complete situational awareness.
The new Sensis system, with its enhanced coverage, will assist with resolving those problems for the Secondary Surveillance Radar (SSR) part of the system.
The MAGX-001090-600L00 is a gold-metalized, matched GaN on SiC, RF power transistor optimized for pulsed avionics applications like secondary surveillance radar in air traffic control systems.
4, 1998--The Federal Aviation Administration (FAA) has competitively selected and awarded Raytheon Systems Company a contract, potentially worth $180 million, to manufacture and install up to 152 new monopulse secondary surveillance radar for the FAA's Air Traffic Control Beacon Interrogator (ATCBI-6) Replacement program.
Joint GM, head of Air Traffic Services in Ahmedabad, Aryama Sanyal, said : As part of the airport's modernization, which began in 2010, the current Monopulse Secondary Surveillance Radar (MSSR) will be replaced with next-generation Mode S Capable MSSR.
BUSINESS WIRE)--March 31, 1998--The Federal Aviation Administration (FAA) has selected Raytheon Systems Company to proceed to operational capabilities testing of its Monopulse Secondary Surveillance Radar (MSSR) for the Air Traffic Control Beacon Interrogator (ATCBI-6) Replacement program.
Moreover, Government officials awarded a $75-million contract to Cassidian, the defence and security unit of the European Aeronautic Defence and Space Company of Munich for new area surveillance radar and secondary surveillance radar systems at six Royal Canadian Air Force airstrips.
The traditional PASSUR FlightPerform(TM) software provides airlines and airports with precision graphics, flight information, and decision support tools derived from terminal airspace flight track data (approximately 150 miles from the airport) from Megadata's PASSUR passive secondary surveillance radar network.
A PASSUR system receives aircraft identification and altitude information from aircraft transponder transmissions which are interrogated by existing secondary surveillance radar without emitting signals.