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Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1] – defined as "A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the ...
Secondary surveillance radar (SSR) is a radar system used in air traffic control (ATC), that unlike primary radar systems that measure the bearing and distance of targets using the detected reflections of radio signals, relies on targets equipped with a radar transponder, that reply to each interrogation signal by transmitting encoded data such ...
Track while scan. Track-while-scan ( TWS) is a mode of radar operation in which the radar allocates part of its power to tracking a target or targets (up to forty with modern radar) while part of its power is allocated to scanning. It is similar to but functions differently in comparison to its counterparts range-while-search (RWS), long range ...
Identification friend or foe. Identification, friend or foe ( IFF) is a combat identification system designed for command and control. It uses a transponder that listens for an interrogation signal and then sends a response that identifies the broadcaster. IFF systems usually use radar frequencies, but other electromagnetic frequencies, radio ...
Researchers have found a link between semaglutide use and NAION, a rare condition that is the second-leading cause of optic nerve blindness. (Getty Images) (Jacob Wackerhausen via Getty Images)
Early Warning (EW) Radar Radar Systems. Ground Control Intercept (GCI) Radar. Airborne Early Warning (AEW) Airborne ground surveillance (AGS) Over-the-Horizon (OTH) Radar. Target Acquisition (TA, TAR) Radar Systems. Surface-to-Air Missile (SAM) Systems. Anti-Aircraft Artillery (AAA) Systems.
Remote Video Inspection System. The Remote Video Inspection System (RVIS) was deployed by United States in the late 1990s at select low-traffic border entry points from Canada. The system allowed passport and customs inspections to be conducted remotely, so that low-risk travelers could enter the country during hours that the border station did ...
Donald Trump has gone from mocking President Joe Biden as a feckless debater who can barely speak to praising his talents ahead of the first debate in the 2024 presidential election.