JRC JMA-7133-SA Instruction Manual page 338

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JMA-7100 Instruction Manual 6.TRUE AND FALSE ECHOES ON DISPLAY
TARGET
Table 6-1： Relation between type and height of target and detection distance and RCS
Type of target
Sea shore line
Sea shore line
Sea shore line
SOLAS target ship (>5000GT)
SOLAS target ship (>500GT)
Small boat with IMO standard
compatible radar reflector
Marine buoy with corner
reflector
Standard marine buoy
10-meter small boat without
radar reflector
Waterway location beacon
Height from
sea surface
(m)
Detection distance shown in the above table may greatly
i
decrease depending on the shape of the target, sea state,
weather and radio wave propagation conditions.
6－ 4
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6.2 STRENGTH OF REFLECTION FROM THE
Detection distance
(NM)
X band S band
60 20 20
6 8
3 6
10 11 11
5 8
4 5.0 3.7
3,5 4.9 3.6
3,5 4.6 3.0
2 3.4 3.0
1 2.0 1.0
RCS [ ]
m
2
X band S band
50,000 50,000
8 5000 5000
6 2500 2500
50,000 30,000
8 1800 1000
7,5 0,5
10 1
5 0,5
2,5 1,4
1 0,1