嵌入式GIS数据采集与导航系统设计技术与功能

The Design and Technology Realization Method of Embedded GIS Data Collection and Navigation System

嵌入式GIS软件是一个主要技术发展的新方向。目前,在国内外得到广泛的应用,本文以北京超图地理信息技术有限公司的eSuperMap GIS+Embedded Visual C++技术进行了嵌入式GIS数据采集与导航系统的设计开发。文章首先对嵌入式GIS数据采集与导航系统的实现作了分析,指出移动计算、嵌入式技术及移动接入与访问技术是系统实现的关键技术。在系统设计中,重点分析了EVC及eSuperMap GIS技术体系,并对矢量数据分层组织方法、空间数据显示比例控制、数据模型及SIT影像压缩技术做了具体的分析。在此基础上,结合应用系统开发,对EVC主要开发接口进行了分析描述。另结合eSuperMap GIS+Embedded Visual C++技术进行了原型系统的设计开发,实现了地图显示和浏览功能、地图数据管理与地图量算、属性管理与查询功能、对象编辑与移动目标计算、最佳路径分析与轨迹回放及GPS数据接收及移动数据终端处理等功能。在GIS数据采集与导航系统开发中,移动计算、嵌入式技术及移动接入与访问技术是系统实现的关键技术。在系统设计中,矢量数据分层组织方法、空间数据显示比例控制、数据模型及SIT影像压缩技术是系统实现的技术关键。通过Mi-crosoft eMbedded C++结合SuperMap嵌入式GIS开发工具,对解决上述关键技术提供了有效解决方法。通过本案例开发实践,我们认为研发一套实用、方便、有针对性的工具软件十分重要。该软件系统对车载导航、军事应用、公安消防等方面的应用具有重要的实践意义和理论参考价值。

Embedded GIS software is the latest GIS development technology, and also is the main technical direction of GIS application. Recently GIS technology has been widely used by users at home and abroad. The paper makes demo program with eSuperMap GIS ＋ Embedded Visual C ＋ ＋ and realized the design of embedded - GIS data collection and navigation system. The paper firstly analysed key technology of embedded - GIS data collection and navigation system, and thinks that mobile computation, embedded technology, mobile wireless techniques and mobile access technology are the core technologies. In the system design the paper mainly analysed the EVC and eSuperMap GIS technology architecture and description vector data layer and organized method, spatial data display scale technology, data model and SIT image compressed technology. And based on the detail description the paper discussed the main development interface of EVC, and attribute and method setting by combining the eS- uperMap GIS ＋ Embedded Visual C ＋ ＋ technology design with the original system, and realized some functions like map display and browse, map data management and map measurement, attribution management and query, object editor and mobile object compution, best route analysis and GPS data collection and terminal operation etc. In the embedded - GIS data collection and navigation system, the author thinks that mobile computation, embedded technology, mobile wireless techniques and mobile access technology are the key technologies. In the system design the author thinks that vector data layer display technology and organized spatial data display scale technology, data model and SIT image compression are layer and scale display method, the key technologies. By combining eSuperMap GIS ＋ Embedded Visual C ＋ ＋ technology the paper presented the efficiency solution method. By using the demo practice we think that practicality, conveniency and pertinency tool software is very important and can make development easily and operation effectively. The software has important practical meaning and theoreti- cal reference merit for many application fields.