Vessel Traffic Density 2013

For the calculation of the data "AIS Vessel Traffic Density", the data of the Universal Shipborne Automatic Identification System (AIS) were evaluated with regard to various parameters and ship types under stochastic aspects. The data are requested once a year for the past year from the European Maritime Safety Agency (EMSA). Among others, the information is collected and stored for the purpose of securing maritime traffic and is used for the manufacture of products produced for navigation by the Federal Maritime and Hydrographic Agency (BSH). The data "AIS Vessel Traffic Density" represent the mean spatio-temporal density distribution of the ships. This is the average number of ships that have passed through a defined area (grid cell) in a certain period of time. The counting distinguishes between five types of vessels: fishing vessels, cargo vessels, tankers, passenger vessels and all vessels. For more information, please visit: https://gdi.bsh.de/en/data/Vessel-Traffic-Density_Dokumentation_Schiffsverkehrsdichte_DE.pdf针对"AIS船舶交通密度"数据集的计算，我们基于随机特性的分析维度，结合各类参数与船舶类型，对船载通用自动识别系统（Universal Shipborne Automatic Identification System，AIS）的原始数据开展评估。本数据集每年从欧洲海事安全局（European Maritime Safety Agency，EMSA）调取一次，覆盖过往完整自然年的数据。该信息的收集与存储除其他应用场景外，核心目的为保障海上交通安全，并被用于德国联邦海事与水文局（Federal Maritime and Hydrographic Agency，BSH）为航海领域研发的相关产品制作。"AIS船舶交通密度"数据集表征了船舶的时空平均密度分布，即特定时段内经过划定区域（网格单元）的船舶平均数量。统计过程中按照船舶类型划分为五类：渔船、货船、油轮、客船及所有其他船舶。如需获取更多信息，请访问：https://gdi.bsh.de/en/data/Vessel-Traffic-Density_Dokumentation_Schiffsverkehrsdichte_DE.pdf