東京湾における船舶交通観測レーダネットワークシステムの研究

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A complete grasp of the actual vessel traffic flow by accurate observation is essential to carry out vessel traffic management, design of vessel traffic route, planning of port construction, etc.. Up to now, the observation of vessel traffic has needed many efforts such as the use of a special ship or a car equipped with radar observation system and the preparation of observation staff for a considerably long period. In order to perform accurate observation of the vessel traffic without such efforts, the authors have been developing completely automated radar network system covering the whole Tokyo Bay. This radar network system consists of a monitoring station (base station) installed at the Maritime Transport Joint Research Center of the Tokyo University of Mercantile Marine and some remote radar stations set on the coast of Tokyo Bay. The remote radar station can be completely controlled from the monitoring station, and the digitized radar image data are sent to the monitoring station through ADSL. In December 2002, the first operational remote radar station was set at the National Defense Academy, from which vessel traffic in the middle part of Tokyo Bay could be clearly observed. In addition to the development of radar network system, the software to analyze observed vessel traffic flow has been developed. This software has various functions such as tracking of ship's positions, automatic estimation of ship's size, animation of ships' movements, display of ships' tracks, calculation of ship's speed distribution, extraction of dangerous ship encounters, etc.. Some analyzed results on vessel traffic flow observed by the remote radar are described in this paper, and effectiveness of the developed system is fully demonstrated.
社団法人日本航海学会の論文
2003-09-25

東京湾における船舶交通観測レーダネットワークシステムの研究

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