The Science Behind Radar
This chapter is a very basic introduction to the principle of pulsed radar. Obviously, getting a beginning concept of the main principle is one objective. Another is to introduce many terms commonly used in the radar language. Those terms which are the most essential to remember are printed in bold italics to assist you. A transmitter emits a burst of RF energy, and objects in its path will reflect the pulse back to the transmitting antenna as an echo. A steering device, called a duplexer, allows the transmitter burst to go to the antenna without damaging the receiver, and then isolates the transmitter during a listening time. The listening time is usually called live time. During live time, the echoes from any objects, called targets, are routed into the receiver.
The Science Behind Radar, Page 1 of 2
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