关键词: 全球卫星定位系统, 导航, 空间数据质量, 规则项, 设计模式

Abstract: This paper presented detailed innovative ways to develop Dictionary-oriented Checking Tool (DCT) for the production of navigation data. To achieve the data integrity of navigation data model and providing navigation data with more strong qualifications, DCT was driven by checking rule database against its practical contributions. Firstly, it dug out and categorized Ad-Hoc checking items into three main checking topics such as base, relation and navigation application, which were respectively subject to reasonable and clear definitions of checking logics and share the same syntax specification. Secondly, it defined different rule items according to rule item prototype and grammar and set up effective rule database. Thirdly, it defined system structure and class diagram realization based on connection pool and template design pattern. At last, with detailed evaluation of sample data, this paper concludes that checking logic abstraction and software reuse techniques are important to the development of checking software.

Key words: Global Positioning System （GPS）, navigation, spatial data quality, rule item, design pattern