卷期 : 46 / 4
出版年 : 2018/10/01
船隻行走海上,航行安全是十分重要的一個課題,當船隻進行停泊時,更需要注意是否在安全的錨泊範圍。本研究透過自動辨識系統(AIS)取得船舶回傳資料,針對錨泊區和非錨泊區,分別使用比值判定法、NonSimple判定法、Convexhull交叉判定法偵測該範圍船隻是否處於錨泊狀態,並分析每種方法的錨泊偵測正確(TP)率、錨泊誤偵測(FP)率、非錨泊偵測正確(TN)率、非錨泊誤偵測(FN)率。透過三種偵測法測得的船位距離和文獻所提的錨泊半徑進行比較,得出錨泊流錨警戒範圍。最終,建構即時監測船舶錨泊的功能,進而判別船舶是否在合理的區域錨舶,或是在不合理的區域從事捕撈、毒品交易等非法行為。Navigation Safety is an important issue when ships are sailing on the sea, while, a safe anchorage is necessary when anchoring a ship. This research uses trajectory data of ships collected via Automatic Identification System(AIS), detects whether ships inside and outside anchorage area are in anchoring states through ratio determination method, NonSimple determination method, and convexhull cross-determination method respectively, and furthermore analyzes the true positive(TP) rate, false positive(FP) rate of each method for anchoring detection and true negative(TN) rate, false negative(FN) rate of each method for non- andchoringdetection. The alert zone for drift anchor is then acquired by comparing ship's position distance detected by above three methods and the anchoring radius proposed in the literature. Finally, results of the research are ready to be applied to a real-time detection and monitoring function of anchoring ships, and we can use this function to determine whether ship is anchoring in reasonable area, or egaging in fishing and drug dealing,etc in unreasonable area.
關鍵詞 : 船舶自動識別系統(AIS)、資料探勘(Data Mining)、錨泊(Anchoring)