해류중 직선 항행하는 선박의 LOS 가이던스 시스템의 제안과 유전 알고리즘을 이용한 최적화
A Proposal of LOS Guidance System of a Ship in Straight-line Navigation under Ocean Currents and its Optimization Using Genetic Algorithm
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Abstract
This paper suggests LOS(Line-Of-Sight) guidance system of a surface vessel in straight-line navigation under ocean currents. An LOS vector from the vessel to a point on the path between two way-points is decided and a heading angle is calculated to converge to follow the desired path based on the LOS vector. This guidance system is called LOS guidance system. The suggested LOS guidance law has parameters to be properly chosen according to navigational environment. Parameters of LOS guidance system are optimized to reduce propulsive energy and/or position error between desired position and present position of a ship using genetic algorithm which is a strong optimization algorithm with adaptational random search. The effectiveness of the suggested LOS guidance system is assured through computer simulations.
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