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Title: A New Method of Collision Avoidance for Vessel Traffic Service
Authors: S. L. Kao;Chien-Min Su;C. Y. Cheng;K. Y. Chang
Contributors: NTOU:Department of Transportation Science
Date: 2007-11
Issue Date: 2012-06-18T06:16:27Z
Publisher: International Conference on Maritime Technology (ICMT 2007)
Abstract: abstract:This paper proposed a novel fuzzy logic method to increase vessel collision avoidance capability on VTS/ AIS. The purpose is to decrease the traffic accidents for all potential collision ships in the VTS surveillance area. VTS does not have enough technical capability to monitor a crowded surveillance area for navigational safety. Without an efficient alert system, many marine accidents have occurred due to operator oversight. In this paper, the collision alert system for VTS/AIS/MGIS is presented to enhance the VTS operator's decision-making abilities which based on the concept of the danger index (radical axis method) and fuzzy guarding ring. The danger index for vessel collision is calculated by the MGIS algorithm and the size of the guarding ring is determined by the fuzzy logic theorem. Furthermore, the AHP method will be used to determine the fuzzy membership function. Starting from the VTS standpoint and integrating AIS data into the MGIS. Hence, a precise prediction of collision time and position can be achieved via a MGIS spatial analyst module. The integration of MGIS as a platform for a VTS/AIS collision alert system is a new concept in nautical digital computer system. The MGIS platform provides mapping and spatial analysis capability to calculate the collision risk among a large number of ships, which the traditional ARPA is unable to accomplish in the same time. Two programming languages, Virtual Basic and C++, have been used as an integrating framework via communication port for VTS/AIS and MGIS. In the further, the proposed system will be extended to advise the timing and angle of rudder required for collision avoidance, which can avoid collision events by well communication between VTS operator and navigator.
Relation: pp.153-159
Appears in Collections:[Department of Transportation Science] Lecture & Seminar

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