AIS虚拟航标的合理设置  

Reasonable setting of AIS virtual aids to navigation

作　　者：李维运 刘畅[2] 李金浩 纪晓妍 LI Wei-yun;LIU Chang;LI Jin-hao;JI Xiao-yan(Shanghai Waterway Survey and Design Institute Co.,Ltd.,Shanghai 200120,China;School of Information Science and Technology,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]中交上海航道勘察设计研究院有限公司,上海200120 [2]大连海事大学信息科学技术学院,辽宁大连116026

出　　处：《水运工程》2021年第11期165-170,共6页Port & Waterway Engineering

基　　金：国家自然科学基金项目(51679116)。

摘　　要：针对如何合理设置AIS虚拟航标的问题,以长江流域和上海港为例,对AIS系统的信道容量及系统阻塞率进行仿真分析。结果表明:1)AIS虚拟航标的设置占用部分通信时隙使信道容量减小;2)系统内船舶数量越多,系统阻塞率增加趋势越明显,AIS虚拟航标的设置对系统通信影响就越大。基于此结论对不同水域条件下可设置AIS虚拟航标数量的阈值进行分析,给出了合理设置AIS虚拟航标的建议,可作为不同水域设置虚拟航标的参考。在确保对船舶通信影响较小的条件下,对AIS虚拟航标进行合理设置,能更好地发挥其助航预警功能、保障船舶航行安全。In view of how to reasonably set up AIS virtual AtoN,this paper simulates and analyzes the channel capacity and system blocking rate of AIS system,taking the Yangtze River basin and Shanghai port as examples.The results show that:1)The setting of AIS virtual AtoN occupies part of the communication time to reduce the channel capacity.2)The more the number of ships in the system,the greater the increase of system blocking rate,and the more serious the impact of AIS virtual AtoN setting on system communication.Based on this conclusion,the threshold values of the number of AIS virtual AtoN that can be set in different water conditions are analyzed,and the suggestions for reasonable setting of AIS virtual AtoN are given,which can be used as a reference for setting virtual beacons in different waters.Under the condition of ensuring less influence on ship communication,the reasonable setting of AIS virtual AtoN can better play its navigational warning function and ensure the safety of ship navigation.

关 键 词：AIS(船舶自动识别系统) 虚拟航标 合理设置 

分 类 号：U612[交通运输工程—船舶及航道工程]