After discussing a series of problems that tourists faced, a personal tourism assistant designed with a portable computer, a GPS board, a GPRS transceiver and electronic map technology was introduced.
针对游客旅游时的诸多不便，利用手持计算机、电子地图、GPS及GPRS收发器实现了一种个人旅游助理。
In the traffic information control centre, after the collected data was analyzed, chose and filtered, the collected information appeared in the electronic map by map matching technology.
交通信息控制中心把采集的数据进行分析、筛选、过滤后，通过地图匹配技术把采集的交通信息显示在电子地图上。
The further discussion of the theory of electronic map, and making a conclusion of design principles and the basic technology of the electronic map.
对电子地图的基本概念、电子地图设计的一般理论进行了较为深入的探讨，总结出电子地图的设计原则以及制作电子地图所需的基本技术。
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