5 – 2
5
Fig. 5.2
When the height of own ship’s antenna is 10m, for example,
a) When the radar line-of-sight range is 64nm, the height of a target to be observed on the radar screen have
to be 660m or more.
b) When the height of a target is 10m, the radar line-of-sight range is 15nm. But the maximum radar range
varies with size of target and weather condition, and the range may increase or decrease.
Height of radar scanner Line-of-sight range Height of target
5
0
10
10
20
30
40
50
60
70
700
660
600
500
400
300
200
100
50
25
10
0
h1(m) D (nm)
h2(m)
0
20
30
5.1
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