Modern ground-based radar systems are transportable by personnel as well as by vehicles, with some systems-such as the AN/PPS-5A/B ground surveillance radar system-in service for a number of decades. For such uses, a submarine would draw close to the water surface level, enabling a radar antenna to rise above the surface of the sea water to transmit signals in search of enemy aircraft. Naval Research Labs (NRL) developed radar systems for maritime applications, including onboard submarines. Radar systems have been used in military applications for ground surveillance, missile control, fire control, air traffic control (ATC), moving target indication (MTI), weapons location, and vehicle search.Īs land-based radar systems were being developed in support of American troops during World War II, the U.S. Military systems still represent the most plentiful source of radar applications, with military radar systems found on land, at sea, and in the air (and in lesser numbers, in space-borne systems). These new and growing application areas are keeping radar designers-from integrated-circuit (IC) to system-level engineers-busy in search of high-performance, cost-effective solutions from RF through millimeter-wave frequencies. Radar technology is now finding uses in many commercial, industrial, medical, weather, and especially automotive systems. Military uses were once the only applications for radar technology, but times have changed. This file type includes high resolution graphics and schematics when applicable. By performing signal processing on these radar returns, information can be extracted regarding the target, its position, and its speed. The basic operation of a radar system involves transmitting a high-frequency signal (usually a pulsed signal) towards the location of an expected target and receiving signals reflected from said target. During that time, radar (a shortening of “radio detection and ranging”) proved an invaluable military tool for locating threats and targets and providing advanced warnings of an adversary’s position and direction. Radar has been a significant RF/microwave technology since the days of World War II.
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