Chapter 5 VARIOUS FUNCTION ICONS
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5.12.1 PULSE LENGTH
The transmission pulse length is changed by adjusting the range.
Range Pulse Length(JMA-1032) Pulse Length(JMA-1034)
0.0625NM SP1 SP1
0.125NM SP1 SP1
0.25NM SP1 SP1
0.5NM SP1/MP1 SP1/MP1
0.75NM SP2/MP1 SP2/MP1
1NM SP2/MP1 SP2/MP1
1.5NM SP2/MP1/MP2 SP2/MP1/MP2
2NM SP3/MP1/MP2 SP3/MP1/MP2
3NM SP3/MP1/MP2 SP3/MP1/MP2
4NM SP3/MP1/MP2 SP3/MP1/MP2
6NM MP2/LP1 MP2/LP1/LP2
8NM MP2/LP1 MP2/LP1/LP2
12NM MP2/LP1 MP2/LP1/LP2
16NM MP2/LP1 MP2/LP1/LP2
24NM LP1 LP2
32NM LP2
48NM LP2
SP(Short Pulse): The transmission pulse length becomes shorter, and the range resolution improved.
The suppression of sea clutter return or rain/snow clutter return is heightened.
Recommended conditions are following.
・In bays / harbors and narrow waterway where targets are densely crowed.
・Rough sea state due to torrential rain or stormy weather.
MP(Middle Pulse): The normal transmission pulse length is set. Both range resolution and sensitivity are
appropriately set. Recommended conditions are General navigation.
LP(Long Pulse): The transmission pulse length becomes longer, and sensitivity improved.
Small targets are zoomed and are easy to observe. When the sea state is bad, detection
performance decreases. Recommended conditions are following.
・Detection of small targets in good weather conditions, at long range.
5.12.2 IR (INTERFERENCE REJECTION)
You can eliminate the interference from other radars by setting an appropriate IR level. However, if a higher
IR level is selected, the detection of small targets such as buoys and small boats become difficult. In general
“Low” level should be selected.
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