文章基本信息

标题：沿海海域における船舶交通流のモデル化について
本地全文：下载
作者：伊藤博子 ; 矢加部文
期刊名称：日本船舶海洋工学会論文集
印刷版ISSN：1880-3717
电子版ISSN：1881-1760
出版年度：2014
卷号：19
页码：235-244
DOI：10.2534/jjasnaoe.19.235
语种：Japanese
出版社：社団法人日本船舶海洋工学会
摘要：A comprehensive understanding of traffic properties is necessary in evaluating and controlling the ship collision risks. AIS (Automatic Identification System) provides a quick and effective method to obtain ship behavior in a wide area, which facilitates gathering of ship traffic data not only in inland seas or restricted congested sea areas, but also in wide coastal sea areas. In this paper, the authors propose a method to utilize AIS data to develop a ship traffic model that represents traffic characteristics, especially focused on lateral direction, ship speed, and course. Nojimazaki area in Japan is taken as a case study. By introducing a definition of virtual gate lines located in the targeted area, and taking intersection points of trajectory with the gate lines, information on ship status at the points are extracted. Statistical analysis shows that speed and course distributions are bilaterally symmetric and distributed in narrow range, while lateral distribution is asymmetric and has a great concentration around the mode. To suit these characteristics, Gauss and gamma distributions are selected. Obtained model reproduced the observation result with reasonable accuracy.