基于AIS数据的预抵船舶联系信息快速查询方法

A fast query method of contact information of arriving ships based on AIS data

为了提高预抵船舶联系信息查询速度,设计基于AIS数据的预抵船舶联系信息快速查询方法。分别对具有全量特性和增量特性的船舶AIS数据进行数据分割,统一数据格式,对分割后的数据段进行航向和航速特征提取,建立特征集,基于特征集和船舶目的港口信息,综合利用直接匹配、别名匹配和模板匹配3种匹配方式,实现对预抵船舶联系信息的快速查询。实验数据表明,设计的基于AIS数据的预抵船舶联系信息快速查询方法单港信息查询速率提高13%,多港预抵船舶信息查询速率提高29.5%,可以有效提高联系信息查询速率。

In order to improve the query speed of pre-arrival ship contact information in designated time and port area,a rapid query method of pre-arrival ship contact information based on automatic identification system(AIS) data is designed.Respectively with full quantity features with the features of AIS data incremental data segmentation, unified data format,with the core characteristics of the course information and the navigation speed, to feature extraction and segmentation after data segment to establish feature set, based on the feature set and shipping purpose port information, comprehensive utilization of direct matching, alias matching three matching method, template matching and realize the fast query of the ship’s contact information list. Experimental data show that the designed AIS data based rapid query method for contact information of arriving ships increases the query rate of single-port information by 13% and that of multi-port pre-arrival ships by 29.5%,which can effectively improve the query rate of contact information.