Search results
Results from the WOW.Com Content Network
This solves the problem of the aircraft transponder replying to false interrogations, but does not completely solve the problem of locating the aircraft through triangulation. To solve this problem, a delay is added to the response signal that varies based on the code sent from the interrogator.
Upon interrogation, Mode S transponders transmit information about the aircraft to the SSR system, to TCAS receivers on board aircraft and to the ADS-B SSR system. This information includes the call sign of the aircraft and/or the aircraft's permanent ICAO 24-bit address (which is represented for human interface purposes as six hexadecimal ...
The aircraft interrogator locks on to the DME ground station once it recognizes a particular reply pulse sequence has the same spacing as the original interrogation sequence. Once the receiver is locked on, it has a narrower window in which to look for the echoes and can retain lock.
This is often used by the controller to locate the aircraft amongst others by requesting the ident function from the pilot, e.g., "Cessna 123AB, squawk 0363 and ident". [ 6 ] [ 7 ] Ident can also be used in case of a reported or suspected radio failure to determine if the failure is only one way and whether the pilot can still transmit or ...
Hanns-Joachim Gottlob Scharff (December 16, 1907 – September 10, 1992) was a German Luftwaffe interrogator during the Second World War.He has been called the "Master Interrogator" of the Luftwaffe, and possibly all of Nazi Germany; he has also been praised for his contribution to shaping U.S. interrogation techniques after the war.
IFF Mark X was the NATO standard military identification friend or foe transponder system from the early 1950s until it was slowly replaced by the IFF Mark XII in the 1970s. It was also adopted by ICAO, with some modifications, as the civilian air traffic control (ATC) secondary radar (SSR) transponder.
When the aircraft receives the interrogation, the aircraft transponder will send a reply on 1090 MHz after a 3.0 μs delay indicating the requested information. The interrogator's processor will then decode the reply and identify the aircraft. The range of the aircraft is determined from the delay between the reply and the interrogation.
Hughes Aircraft Company: AN/AAR-31: Infrared (IR) detection set for Anti-submarine warfare: Barnes Engineering AN/AAR-34: Infrared (IR) Tracking & Missile Warning System, replacing the AN/ALR-23: F-111 Aardvark: Cincinnati Electronics AN/AAR-37: Infrared (IR) Detector: P-3A/B Orion, EP-3E: Hughes Aircraft Company: AN/AAR-38: COMPASS COOL ...