Computation method of ship domains in restricted waters based on AIS data
Article Text (Baidu Translation)
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摘要: 为获取受限水域船舶领域, 提出一种利用海量AIS数据建立模型的方法。选取目标船舶的AIS数据, 将其附近水域网格化, 考虑了船舶尺寸, 计算了他船船体出现在每一个网格中的频数, 提取单船网格频数图, 将同一类型的目标船舶网格频数图叠加, 形成了特定类型船舶的网格频数图。将网格频数图按频数填充颜色, 可清晰地显示船舶领域的形状, 利用断面分析测量船舶领域长度。选用上海港南槽水域的AIS数据对方法进行验证, 统计了60~79、80~99、100~119、120~139、140~159m共5类不同长度船舶的船舶领域。分析结果表明: 由于考虑了船舶尺寸, 5类船舶的领域在长轴方向较船首向存在向左舷偏转的夹角, 角度分别为3.37°、9.46°、17.53°、10.78°、8.13°; 船舶领域长度与船舶长度的比值依次递减, 比值分别为6.00、5.80、5.67、5.43、5.13。可见受限水域内船舶领域形状为不规则椭圆, 且船舶领域长度与船舶长度的比值并非为定值。Abstract: In order to obtain the ship domains in restricted waters, a method was proposed by using large volume of AIS data.The AIS data of target ships were selected, and the waters nearby target ships were gridded.The occupy frequencies of other ships in each grid were calculated, and the grid frequency graph of single ship was extracted.The ship sizes were considered in the calculation process.Through overlying all grid frequency graphs of target ships with certain length, the grid frequency graph of specific ship was achieved.The grids in the grid frequency graphs were filled with colors according to different frequencies, then the shape of specific ship domain was observed clearly.Through fracturing and measuring the surface of ship domain, the length of ship domain was acquired.The proposed method was verified by using the AIS data from ships navigating in Nancao Restricted Waters of Shanghai Port.The domains of ships with the lengths of 60-79, 80-99, 100-119, 120-139, 140-159 m were calculated.Analysis result indicates that since the ship sizes are taking into consideration, the direction of ship domain's long axis has a portside deflection angle to heading, the angles are 3.37°, 9.46°, 17.53°, 10.78°, 8.13°respectively for the five types of ships.The length ratios of ship domain to ship decrease with the increase of ship length, and the ratios are 6.00, 5.80, 5.67, 5.43and5.13 respectively for the five types of ships.So the shape of ship domain in restricted waters is irregular ellipse, and the length ratio of ship domain to ship is not constant.
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Key words:
- marine technology /
- ship domain /
- restricted waters /
- AIS data /
- data mining /
- grid frequency diagram
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表 1 船舶领域长轴与船舶首向夹角
Table 1. Angles between long axises of shipdomains and ship headings
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[1] FUJⅡ Y, TANAKA K. Traffic capacity[J]. Journal of Navigation, 1971, 24(4): 543-552. doi: 10.1017/S0373463300022384 [2] GOODWIN E M. A statistical study of ship domains[J]. Journal of Navigation, 1975, 28(3): 328-344. doi: 10.1017/S0373463300041230 [3] DAVIS P V, DOVE M J, STOCKEL C T. A computer simulation of marine traffic using domains and arenas[J]. Journal of Navigation, 1980, 33(2): 215-222. doi: 10.1017/S0373463300035220 [4] DAVIS P V, DOVE M J, STOCKEL C T. A computer simulation of multi-ship encounters[J]. Journal of Navigation, 1982, 35(2): 347-352. doi: 10.1017/S0373463300022177 [5] PIETRZYKOWSKI Z. Ship's fuzzy domain―a criterion for navigational safety in narrow fairways[J]. Journal of Navigation, 2008, 61(3): 499-514. doi: 10.1017/S0373463308004682 [6] PIETRZYKOWSKI Z, URIASZ J. The ship domain―a criterion of navigational safety assessment in an open sea area[J]. Journal of Navigation, 2009, 62(1): 93-108. doi: 10.1017/S0373463308005018 [7] S'MIERZCHALSKI R, MICHALEWICZ Z. Modeling of ship trajectory in collision situations by an evolutionary algorithm[J]. IEEE Transactions on Evolutionary Computation, 2000, 4(3): 227-241. doi: 10.1109/4235.873234 [8] S'MIERZCHALSKI R, MICHALEWICZ Z. Adaptive modeling of a ship trajectory in collision situations at sea[C]∥IEEE. Proceedings of the 1998 IEEE International Conference on Evolutionary Computation. New York: IEEE, 1998: 342-347. [9] 贾传荧. 拥挤水域内船舶领域的探讨[J]. 大连海事大学学报, 1989, 15(4): 15-19. https://www.cnki.com.cn/Article/CJFDTOTAL-DLHS198904002.htmJIA Chuan-ying. Ship domain in congested water area[J]. Journal of Dalian Maritime University, 1989, 15(4): 15-19. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DLHS198904002.htm [10] 陈厚忠, 郭国平. 内河并列桥梁桥区水域船舶领域模型与通过能力研究[J]. 船海工程, 2008, 37(5): 113-116. doi: 10.3963/j.issn.1671-7953.2008.05.032CHEN Hou-zhong, GUO Guo-ping. Research of ship domain and the traffic capacity in paratactic bridge water area[J]. Ship and Ocean Engineering, 2008, 37(5): 113-116. (in Chinese) doi: 10.3963/j.issn.1671-7953.2008.05.032 [11] 刘绍满, 王宁, 吴兆麟. 船舶领域研究综述[J]. 大连海事大学学报, 2011, 37(1): 51-54. https://www.cnki.com.cn/Article/CJFDTOTAL-DLHS201101014.htmLIU Shao-man, WANG Ning, WU Zhao-lin. Review of research on ship domain[J]. Journal of Dalian Maritime University, 2011, 37(1): 51-54. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DLHS201101014.htm [12] WANG Ning. An intelligent spatial collision risk based on the quaternion ship domain[J]. Journal of Navigation, 2010, 63(4): 733-749. doi: 10.1017/S0373463310000202 [13] ZHU Xiao-lin, XU Han-zhen, LIN Jun-qing. Domain and its model based on neural networks[J]. Journal of Navigation, 2001, 54(1): 97-103. doi: 10.1017/S0373463300001247 [14] HANSEN M G, JENSEN T K, LEHN-SCHIØLER T, et al. Empirical ship domain based on AIS data[J]. Journal of Navigation, 2013, 66(6): 931-940. doi: 10.1017/S0373463313000489 [15] SZLAPCZYNSKI R. A unified measure of collision risk derived from the concept of a ship domain[J]. Journal of Navigation, 2006, 59(3): 477-490. doi: 10.1017/S0373463306003833 [16] WANG Ning, MENG Xian-yao, XU Qing-yang, et al. A unified analytical framework for ship domains[J]. Journal of Navigation, 2009, 62(4): 643-655. doi: 10.1017/S0373463309990178 [17] WANG Ning. A novel analytical framework for dynamic quaternion ship domains[J]. Journal of Navigation, 2013, 66(2): 265-281. doi: 10.1017/S0373463312000483 [18] LIU Shao-man, WANG Ning, SHAO Zhu-rong, et al. A novel dynamic quaternion ship domain[C]∥IEEE. The Fifth International Conference on Intelligent Control and Information Processing. New York: IEEE, 2014: 175-180. [19] CHANG S J, HSIAO D T, WANG W C. AIS-based delineation and interpretation of ship domain models[C]∥IEEE. OCEANS 2014. New York: IEEE, 2014: 1-6. [20] 初秀民, 刘潼, 马枫, 等. 山区航道AIS信号场强分布特性[J]. 交通运输工程学报, 2014, 14(6): 117-126. doi: 10.3969/j.issn.1671-1637.2014.06.015CHU Xiu-min, LIU Tong, MA Feng, et al. Distribution characteristic of AIS signal field intensity along mountainous waterway[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 117-126. (in Chinese) doi: 10.3969/j.issn.1671-1637.2014.06.015 -
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