Introduction Identification, friend or foe (IFF) is a radar-based 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. It enables military and civilian air traffic control interrogation systems to identify aircraft, vehicles or forces as friendly and to… Read More
Introduction The Philadelphia Experiment is an alleged military experiment (many say urban legend) supposed to have been carried out by the US Navy at the Philadelphia Naval Shipyard in Philadelphia, Pennsylvania, United States, sometime around 28 October 1943 (during World War II). The United States Navy destroyer escort USS Eldridge was claimed to have been… Read More
Introduction Radar is a detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna,… Read More
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