Abstract
Abstract: Radio detection and ranging, that is, RADAR is a radio wave technique to determine the range, altitude, direction of objects. The radar dish or antenna transmits pulses of radio waves or microwaves which bounces off any object in their path. It works by launching a short pulse at the ear audible frequency, after that microcontroller listens for echoes. The information about the distance to the object is given at the time elapsed during transmission to the echo reception. The object returns a tiny part of the wave’s energy to a dish or antenna which is usually located at same site as the transmitter. High tech radar systems are associated with digital signal processing and are capable of extracting useful information from very high noise levels.
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