New inland river channel transit capacity evaluation method based on dynamic quaternion ship domain model

A new evolution method is proposed in this paper to estimate inland river channel transit capacity. Compared with the conventional methods which usually use Fujii ellipsoid ship domain model, the dynamic quaternion ship domain (DQSD) model is used to determine the safe region of the ships sailing in the inland river channel, which takes ship dynamics, human reliability and circumstance factor into account. Fuzzy logics also are applied to obtain the human factors of DQSD model from the questionnaire investigating data. The transit capacities from Yingong island channel data show that the new evaluation method can reduce the conservation of the transit capacity estimation.