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Conference Proceedings Vol. I, II, III

 事業名 海事シミュレーションと船舶操縦に関する国際会議の開催
 団体名 日本船舶海洋工学会 注目度注目度5


2.2 Scenarios and Results
 
 We had several scenarios to evaluate AIS function and display with RADAR/ARPA data as follows.
 
(1) Scenario-1
 
 This scenario is to evaluate in a case of moving parallel to on point standing abreast line laterally from Base station illustrated as Fig.2. Every ship navigates at approx. 5 knots.
 
Fig.2 Scenario 1
 
 Investigation of scenario-1 was executed and we got the following results.
■It is good coincidence between AIS data and ARPA data before meeting point.
■ARPA data is comparatively stable in sailing, but in anchoring it is unstable such as swapping data between sailing ship close to own-ship.
■Because of changing data refresh rate by her speed, so AIS readout displays later than RADAR readout.
 
(2) Scenario-2
 
 This scenario is to evaluate in a case of moving parallel to on point standing abreast line longitudinal from Base station illustrated as Fig.3. Every ship navigates at approx. 5 knots, and the distance between ships initial positions is approx. 360 meters.
 
Fig.3 Scenario-2
 
 Investigation of scenario-2 was executed to clear the difference between scenario 1 and 2, and it was confirmed that there was no difference.
 
(3) Scenario-3
 
 This scenario is to evaluate in a case of moving parallel and over-taking illustrated as Fig.4. Ship B and D start first at approx. 5 knots, and after 3 minuets Ship A and C start and over-take others at approx. 10 knots. The distance between ships initial positions are approx. 150 meters.
 
Fig.4 Scenario-3
 
 Investigation of scenario-3 was executed and we got the following results.
■There is no swapping in sailing with the distance approx. 150 meters.
■It is difficult to identify the readout of ship's name in case of small range.
 
(4) Scenario-4
 
 This scenario is to evaluate in a case of turning illustrated as Fig.5. Every ship navigates at approx. 5 knots and 10 knots.
 
Fig.5 Scenario-4
 
 Investigation of scenario-4 was executed and we got the following results.
■In both case of speed 5 knots and 10 knots, AIS data ARPA data are stable in sailing, due to a small turning circle.
■ In stopping it is unstable such as swapping data between sailing ships close to own-ship.







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更新日: 2020年10月17日

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