航海者の意思決定・行動モデルに関する研究II : 総合的な主観的衝突のおそれ

概要

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For Navigator, one of basic actions for safety navigation is to avoid a collision. However Navigator's decision-making and action to avoid a collision are carried out by his subjective risk of collision that is different by each navigator. Our purpose is to generate a standard navigator's decision-making and action model that might become one index for safety navigation and navigational education area. On this study, SROC_1 (subjective risk of collision) is expressed as a function of target's TCPA and SROC_2 was expressed as a function of target's DCPA was proposed from the result of experiment using navigation simulator. In this paper, firstly SYSROC (synthetically subjective risk of collision) is consequently synthesized from the SROC_1 and the SROC_2, which is able to measure navigator's subjective risk to avoid a collision. Secondly one collision case scenario is selected to assess the SYSROC. Next the SYSROC is calculated and some action spaces to avoid a collision are expressed by maximum SYSROC value at each situation when a navigator would like to change her course and speed. Finally for near future some predicted SYSROC value are shown under the some courses and speeds of all target ships and own ship.
2010-03-25