基于船舶轨迹挖掘的海上航路网络构建方法

项迪; 黄亮; 周春辉; 文元桥; 黄亚敏; 戴红良

doi:10.3963/j.jssn.1674-4861.2023.03.008

基于船舶轨迹挖掘的海上航路网络构建方法

doi: 10.3963/j.jssn.1674-4861.2023.03.008

项迪^{1, 2,},
黄亮^{1, 3, ,},
周春辉²,
文元桥^{1, 3},
黄亚敏¹,
戴红良⁴

1.
武汉理工大学水路交通控制全国重点实验室武汉 430063
2.
武汉理工大学航运学院武汉 430063
3.
武汉理工大学三亚科教创新园海南三亚 572000
4.
浙江省交通运输科学研究院杭州 310039

基金项目:

海南省科技计划三亚崖州湾科技城自然科学基金联合项目 2021JJLH0012

浙江省重点研发计划 2021C01010

国家重点研发计划项目 2021YFB2600300

详细信息

作者简介:
项迪（1996—），硕士研究生. 研究方向：船舶轨迹数据挖掘、船舶行为分析. E-mail: 512074281@qq.com

通讯作者:
黄亮（1986—），博士，副研究员. 研究方向：海事大数据等. E-mail: leung.huang@whut.edu.cn

中图分类号: U675.7;TP311
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出版历程
- 收稿日期: 2022-12-19
- 网络出版日期: 2023-09-16

A Method of Constructing Maritime Route Network Based on Ship Trajectory Mining

XIANG Di^{1, 2
,},
HUANG Liang^{1, 3
, ,},
ZHOU Chunhui²,
WEN Yuanqiao^{1, 3},
HUANG Yamin¹,
DAI Hongliang⁴

1.
State Key Laboratory of Maritime Technology and Safety, Wuhan University of Technology, Wuhan 430063, China
2.
School of Navigation, Wuhan University of Technology, Wuhan 430063, China
3.
Sanya Science and Education Innovation Park, Wuhan University of Technology, Sanya 57200, Hainan, China
4.
Zhejiang Scientific Research Institute of Transport, Hangzhou 310039, China

摘要

摘要: 海上航路网络是船舶海上交通活动特征的时空表征，也是船舶航路规划、行为辨识、轨迹预测的重要基础。海量的船舶历史轨迹数据为自动提取海上航路网络提供了基础数据，但受轨迹数据噪声和密度分布不均匀的影响，传统航路网络自动提取方法存在网络节点识别准确性差、网络边连接错误率高等问题。针对上述问题，研究了1种基于船舶轨迹时空特征挖掘的海上航路网络自动构建方法。定义了海上航路网络的3种航路点类型，即停留点、出入点和航路转向点，设计了基于轨迹时空特征的航路点提取方法；提出了基于累计转向特征的航路转向点过滤策略，可有效去除船舶避碰、船舶徘徊等局部活动产生的非航路转向点；根据不同种类航路点的分布特征，综合利用DBSCAN聚类算法和凸包算法从航路点集合中提取和生成航路网络节点集合；定义了航路网络节点的有效连接规则，从原始轨迹中提取航路网络节点之间的轨迹簇，根据轨迹簇的统计特征生成航路网络节点之间的有向加权边，形成有向加权的海上航路网络。以珠江口水域为实验区域，对所提方法进行有效性验证，结果表明：所提方法可提取71个3类航路网络节点和200条航路路线；航路网络节点识别准确率与误识别率分别为86.42%和1.23%；航路网络边连接的准确率接近95%。所提方法能够有效识别海上航路的关键航路点及主要路线，实现航路网络的自动构建。
- 智能交通 /
- 船舶轨迹 /
- 航路网络生成模型 /
- 时空特征挖掘 /
- 航路提取
Abstract: The Maritime Route Network (MRN) is a spatiotemporal representation of maritime traffic characteristics and serves as a fundamental basis for ship route planning, behavior identification, and trajectory prediction. The vast amount of historical ship trajectory data provides foundational information for the automatic construction of the MRN. However, traditional automatic construction methods are hindered by poor accuracy in recognizing network nodes and a high error rate in connecting network edges due to trajectory data noise and uneven density distribution. To address these issues, this study proposes an automatic construction method for the MRN based on mining the spatiotemporal characteristics of ship trajectories. Three types of waypoints in the MRN are defined: stop points, entry/exit points, and route turning points. A waypoint extraction method based on trajectory spatiotemporal characteristics is designed. Additionally, a route turning point filtering strategy based on cumulative turning characteristics is proposed to effectively remove the non-route turning points caused by local activities such as ship collision avoidance and ship loitering. According to the distribution characteristics of different types of waypoints, a combination of the density-based spatial clustering of applications with noise (DBSCAN) clustering algorithm and the convex hull algorithm is applied to extract and generate the set of MRN nodes from the waypoints set. Based on the definition of effective connection rules for the MRN nodes, the trajectory clusters between the MRN nodes are extracted from the original trajectories. The directed weighted edges between the MRN nodes are generated based on the statistical characteristics of trajectory clusters to form a directed weighted MRN. The proposed method is validated in the Pearl River Estuary area. The results indicate that the method can extract 71 MRN nodes of the three types and 200 routes. The recognition accuracy and misrecognition rate of the MRN nodes are 86.42% and 1.23%, respectively, while the accuracy rate of the MRN edge connections is nearly 95%. The proposed method effectively identifies the critical waypoints and main routes in the maritime routes and realizes the automatic construction of the MRN.
- intelligent transportation /
- ship trajectory /
- route network generation model /
- spatial-temporal feature mining /
- route extraction

HTML全文

图 1 海上航路网络构建流程

Figure 1. The developing process of maritime route network

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图 2 航路转向点识别流程

Figure 2. The process of route turning points identification

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图 3 港口码头停留节点提取流程

Figure 3. Extraction process of port terminal stop nodes

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图 4 会导致网络边错误连接的2种情况

Figure 4. Two situations that can cause the edge to be misconnected

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图 5 珠江口水域集装箱船轨迹图

Figure 5. The trajectory of container ships in the waters of the Pearl River Estuary

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图 6 靠泊停留点与锚泊停留点识别结果

Figure 6. Identification results of berthing and anchoring points

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图 7 港口码头停留节点及节点区域提取结果

Figure 7. Extraction results of port terminal stop nodes and node areas

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图 8 航路转向节点提取

Figure 8. Route turning nodes extraction

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图 9 出入点聚类结果

Figure 9. Entry and exit points clustering results

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图 10 航路网络节点提取结果

Figure 10. The nodes of route network extraction results

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图 11 节点间子航路轨迹提取结果

Figure 11. Results of sub-routes trajectory extraction between nodes

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图 12 有向加权航路网络构建结果

Figure 12. Directed weighted maritime route network results

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图 13 海上航路网络构建的对比实验

Figure 13. Comparative experiment on the extraction of maritime route network

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表 1 转向点分区聚类参数

Table 1. Turning point partition clustering parameters

密度区域	eps/m	MinPts
高	500	150
中	500	50
低	800	20

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表 2 各等级航路航次范围

Table 2. Range of voyages for each class of routes

航路等级	航次范围/次
主干航路	(180, ∞)
次干航路	(90, 180]
分支航路	(25, 90]
次支航路	[10, 25]

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表 3 不同方法的节点提取实验对比结果

Table 3. Comparative results of node extraction experiments using different methods

构建方法	节点类型	N_ide	N_mis	N_un	d_np/m	R_acc/%	R_mis /%
本文方法	停留	9	0	1	379.92	90	0
	出入	14	0	0	136.79	100	0
	航路转向	48	1	10	282.30	82.46	1.75
	全部节点	71	1	11	266.65	86.42	1.23
文献[6]方法	停留	10	4	4	1582.92	60	40
	出入	14	0	0	157.84	100	0
	航路转向	42	4	19	568.38	66.67	7.02
	全部节点	66	8	23	635.02	71.60	9.87
文献[10]方法	停留	6	0	4	793.68	60	0
	出入	13	0	1	288.98	92.86	0
	航路转向	43	4	18	939.53	68.42	7.02
	全部节点	62	4	23	789.01	71.60	4.94

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