文件名称：Radar System Engineering
文件大小：37.72MB
文件格式：PDF
更新时间：2022-01-19 14:03:18
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What Radar Does. —Radar is an addition to man’s sensory equipment which affords genuinely new facilities. It enables a certain class of objects to be “seen” —that is, detected andlocated—at distances far beyond those at which they could be distinguished by the unaided eye. This ‘(seeing” is unimpaired by night, fog, cloud, smoke, and most other obstacles to ordinary vision. Radar further permits the measurement of the range of the objects it “sees” (this verb will hereafter be used without apologetic quotation marks) with a convenience and precision entirely unknown in the past. It can also measure the instantaneous speed of such an object toward or away from the observing station in a simple and natural way.