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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41540

Title: Fuzzy Grounding Alert System for Vessel Traffic Service via 3D Marine GIS
Authors: Sheng-Long Kao
Ki-Yin Chang
Tai-Wen Hsu
Contributors: 國立臺灣海洋大學:商船學系
Keywords: Vessel Traffic Service
Grounding Alert
Marine GIS
Fuzzy Logic Control
Danger Alert Angle
Date: 2017
Issue Date: 2017-03-01T06:12:41Z
Publisher: Journal of Marine Science and Technology
Abstract: ABSTRACT: There have been intensive discussions about methods to prevent vessels from grounding when sailing near offshore or harbor areas because grounding accidents always cause oil pollution around coastline areas. This study used a marine geographic information system (MGIS) to survey the 3D seabed topography and geology in order to build a novel virtual aid for navigation with a grounding alert.Dynamic and static data were provided by using the Automatic Identification System (AIS) as the input, and fuzzy logic control was used for computation of the output. The maximum draft point along the vessel’s route was configured as a reference point, and a swath angle of 0°-90° was used to search the seabed topography segments and obtain the Water Depth Swath Angle (WDSA) based on the concept of the compression and dilation equations for time and space. The MGIS was used as the data processing platform. After analysing the professional sailing rule base with the high alert rule base with regard to the security benefit of the hazard alert, an appropriate alert distance was configured. Moreover, AIS/MGIS could be used for XTE (cross track error) calibration. Based on three alert levels (amber, red, and flashing red/alarm), VTS operators and crewmembers can obtain precise alerts to perform effective avoidance before vessels enter shallow water.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41540
Appears in Collections:[商船學系] 期刊論文

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