基于时空数据模型的导航电子地图增量更新技术

基于时空数据模型分析提出一种导航电子地图增量更新技术。首先根据传统的导航电子地图格式设计基本的导航电子地图的交换格式和分层分块的物理格式；然后使用增量包设计对实时导航信息的属性关系和空间关系进行增量存储，并根据导航电子地图增量更新服务框架设计了增量模式的数据编辑与检查；最后针对更新后的分块数据采用局部拓扑构建的方法，在编辑导航数据的同时维护导航数据的拓扑关系。增量更新技术平台的实现进一步验证了技术的实用性。

Incremental Updating Technique of Navigation Electronic Map Based on Spatial-temporal data model

This paper presents a technique to update navigation electronic map based on spatial-temporal data model analysis. Firstly, the technique designs the interchange format and physical format according to the traditional navigation data format. Secondly, the attributes and spatial relations incremental storing package are designed, as well as the incremental editing and checking processes, according the navigation data incremental updating service framework. Finally, focus on the partitioned data after updating, a local topology construction method is adopted by maintain the topology relationship while edit the navigation data. The platform construction of incremental updating proves the practical applicability of the technique.