Risk Evaluation of Navigation Environment Based on Dynamic Weight Model and Its Application

In order to scientifically and reasonably evaluate the safety risk of ship navigation, better solve problems poor sensitivity static evaluation insufficient ability grasp overall dynamic situation, in this paper, representative indexes for navigation are screened initial weight each index is confirmed combination with improved analytic hierarchy process (IAHP), learn changes environment accident samples waters jurisdiction. Finally, carried out by constructing a model based on fusion subjective objective impact factors. The under jurisdiction Sanya, China were selected study, was calculated using risk. calculation results highly consistent statistics historical accidents analysis characteristics water area greatest from May September every year. can not only overcome distortion traditional theory practical applications, but also provide scientific theoretical basis early warning environments through continuous sample learning.