摘要
地图是一种描述地理实体的符号化图像和一种传输地理信息的工具。电子地图是传统地图与计算机技术、GIS技术、网络技术相融合的产物,是地理信息的符号化表现,是空间信息与专题信息的结合,是传统测绘产业技术改造的结果,是提供地理信息公共服务的重要渠道,突破了传统纸质地图时间和空间上的局限性,具有更丰富的信息含量和更广阔的应用范围。文中以加拿大为例,介绍电子地图在Web环境和Mobile环境下的应用情况,前者包括城市电子地图、全球地图搜索引擎和三维地球资源探索,后者包括数据采集服务、位置服务和导航定位服务。
Map is a symbolic image of geographic entities and a tool for geographic information transportation. Electronic map is the integration of traditional map, computer technology, GIS and network technology, is the symbolic presentation of geographic information, is the combination of spatial information and special informa- tion, is the result of traditional surveying technology innovation, and is the important channel for providing public service of geographic information, which breaks through the temporal and spatial limitation of traditional paper map. And it has more richer information contents and more wider application fields. Taking Canada as example, the application of electronic map in web and mobile condition is introduced. The former includes eMap, map locator engine and geographic exploration systems, and the latter includes data capture, location-based service and navigation service.
出处
《测绘工程》
CSCD
2007年第6期12-15,共4页
Engineering of Surveying and Mapping
基金
国家外国专家局资助培训项目(RJ2005420106)
