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Radar System Engineering

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UJ<br />

-—--- /<br />

c1 :-,<br />

Angledata<br />

transmitter<br />

Mixer:-d<br />

Lf<br />

(30 Me/see)<br />

ATR — TR Mixer<br />

i<br />

Mixer<br />

I<br />

30 Me/see<br />

oscdlator<br />

@<br />

Clutter<br />

filter<br />

‘~ ~ 2fr 3fr<br />

LJLJU-<br />

oscillator<br />

Modulator Attenuator<br />

frequency/0<br />

Rectifier<br />

w<br />

i=<br />

I<br />

PPI sweep<br />

triggered by<br />

Square wave<br />

I<br />

‘‘@<br />

@<br />

Noise and doppler<br />

filter-<br />

@<br />

I<br />

m.<br />

lr<br />

FIG. 5.15.—Block diagram of pulse-modulateddoppler system.<br />

47<br />

..-—

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