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AP3302 Pt3 Contents

AP3302 Pt3 Section 1 Contents

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AP 3302 Pt. 3

Section 1


Basic Requirements Of A Pulse-Modulated Radar System

Many factors have to be considered befor the p.r.f. and the pulse duration of a particular radar installation are decided, but typical figures are a p.r.f. of 500 pulses per second and a pulse duration of 1 us. For the figures quoted the transmitter "fires" for only one millionth of a second and is then off for 1/500 second or 2,000 millionths of a second.




To give us an idea of what these figures really mean let us for the moment imagine them to be multiplied by one million as in Fig 4. This emphasises that the transmitter fires for only a very short period of time, the interval between each pulse beingrelatively long.







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