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Small and Short-Range Radar Systems by Gregory L. Charvat

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Preface

Inexpensive microwave components, micro-computing, and data acquisition have made possible widespread adaptation of small and short-range radar sensors. Initially, small radar sensors were continuous wave (CW) Doppler units for use as proximity fuses during the Second World War. These sensors were mounted on the top of an anti-aircraft shell, detonating the shell when it approached the body of an aircraft. Shortly after the war CW radar sensors found use in the law-enforcement application of measuring the speed of automobiles. During the late 1950s automotive radar sensors were developed but proved too costly. With the invention of the Gunn oscillator the small Doppler radar found use as a motion sensor for opening automatic doors. During ...

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