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A GPS-based system for precise shipping guidance and control 总被引:2,自引:0,他引:2
Mami Ueno 《Journal of Marine Science and Technology》2000,5(1):9-15
This paper discusses the general concept of an automatic berthing system. The research considered the automatic berthing
of a large merchant ship. A global positioning system (GPS)-based system, which provides the necessary information on position,
velocity, attitude (roll, pitch, and heading), angular velocity, and time, was the principal sensor used. Field tests were
conducted on board a hydrographic sounding ship to assess the quality of information obtained from a GPS-based system. The
data were processed using the software with which the algorithms developed in this research were implemented. This paper also
discusses various aspects concerning a real-time GPS-based system in relation to an automatic berthing system, such as integration
of sensors, mathematical models, port infrastructure, and training of crews.
Received: October 22, 1999 / Accepted: June 30, 2000 相似文献
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Pingjian Liu Eiichi Kobayashi Teruo Ohsawa Mami Sakata 《Journal of Marine Science and Technology》2006,11(3):201-207
Historically, the emphasis on environmental problems has been on visible pollution. However, as a result of the reduction
in visible pollution in recent years, many people have become anxious about invisible dangers. The method for objectively
evaluating these invisible dangers is risk assessment. Therefore, in the present study we propose and discuss a method for
evaluating the influence of a modal shift in transportation on cancer risk using the technique of risk assessment. First,
two representative transportation routes were selected for analysis. Subsequently, the level of airborne carcinogens from
the exhaust of ships and trucks was determined. Next, the concentration of each carcinogen in locations across Japan was calculated.
Finally, the number of people in Japan who will suffer from cancer related to these emissions was derived and the effects
of the modal shift on health are discussed. 相似文献
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