36. Radar altimeter is used for measurement of :
(a) height
(b) speed
(c) range
(d) bearing
37. MST radar is used for :
(a) remote sensing
(b) weather forecasting
(c) fire controlling
(d) speed trapping
38. Correlation is :
(a) the process of matching two waveforms
(b) an algorithm
(c) a matched filter
(d) the process of integration
39. Grating lobes are :
(a) desirable
(b) undesirable
(c) used in point communications
(d) used in weather forecast radars
40. Phased array radar is used for :
(a) fast scanning
(b) non-scanning only
(c) weather forecasting
(d) speed trapping
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