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Radar System Engineering

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SEC.5.12] SUMMARY 159<br />

SYSTEMCHARACTERISTICS<br />

j, = modulation frequency or PRF fD = doppler frequency<br />

Response<br />

time<br />

k<br />

nforma<br />

tion<br />

rate<br />

1<br />

r<br />

iWumber Grour<br />

)f targeti Clutt(<br />

possible eject.<br />

1 No<br />

jrr<br />

Zero<br />

range<br />

)ossible<br />

No<br />

Frequency<br />

restrictions<br />

Remarks<br />

k<br />

1<br />

r<br />

1<br />

frT<br />

Yes<br />

No In 1946, maximum<br />

clutter reduction<br />

about 30 db.<br />

r,rl n Yes Yes If band is not split<br />

n = 1. Groundclutter<br />

filters are very<br />

simple.<br />

1 Yes Yes<br />

f. 1 No Yes<br />

In practice, noise limit<br />

usually set by other<br />

factors than noise<br />

band.<br />

;fr<br />

Yes<br />

Yes<br />

fD

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