INTRODUCTION TO NAVAL WIPONS ENGINEERING

Introduction to Naval Weapons Engineering


Radar is an acronym for Radio Detection and Ranging. The term "radio"
refers to the use of electromagnetic waves with wavelengths in the so-called radio
wave portion of the spectrum, which covers a wide range from 104 km to 1 cm. Radar
systems typically use wavelengths on the order of 10 cm, corresponding to frequencies
of about 3 GHz. The detection and ranging part of the acronym is accomplished by
timing the delay between transmission of a pulse of radio energy and its subsequent
return. If the time delay is Dt, then the range may be determined by the simple
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