Radar and ARPA Manual

TARGET DETECTION

189

on the 'second trace') or even later, be accepted by the

receiver and so be displayed but obviously at an incor-

rect range.

Consider a radar system operating with the following

parameters:

PRF =1250 pulses/second (pps) and therefore the

PRP = 800 /is (an echo which returns after an interval of

800 /is from transmission will be from a target which is

at a range of 64n mile).

Long pulse is being used on the 12 n mile range scale

(timebase =150

/is)

and there are objects at 6 n miles and

72 n miles which will respond well to radar pulses if

struck.

Note Under standard atmospheric conditions, the

object at 72 n mile would b ...