船舶自动识别系统数据分布式存储方法

A Distributed Storage Method of AIS Data Based on Key-Value Store

目前船舶存储自动识别系统(AIS)数据主要用关系数据库。随着时间的推移,积累的AIS数据量逐渐增大,面临的问题是如何高效率地存储和查询长期的AIS数据。现利用键值对构建AIS数据存储结构模型,通过建立分布式数据库来存储长期的AIS数据。实验结果表明:构建的分布式数据库模型可以存储海量AIS信息,基于键值对的数据存储结构提高了AIS信息查询速度,为船舶轨迹的长期查询提供了一种有效的方法。

AIS data is stored mainly by using relational database at present. With the accumulation of AIS data, the problem of how to store and query historical data efficiently arises. A data storage structure model of AIS is con- structed by using key-value storage and a distributed database system is set up for the historical AIS data. Experi- mental results show that the model of distributed database system is capable to store a large amount of historical AIS data and the key-value storage structure enhances the access speed, which provides an effective method for retrieving historical trajectory data of ships.