利用MMS实现移动空间信息服务

Implementation of Mobile Spatial Information Service by MMS

讨论了MMS技术及其在空间信息服务领域中的应用。介绍了一个MMSDataBase网关系统 ,用于实现手机多媒体短信息与城市空间数据库、GIS应用服务器MapServer之间的连接以及MMS编程方法、基于规则的命令解析方法和基于查询脚本的空间查询方法。描述并分析了系统的设计方案。

This paper introduces the MMS technology and its application to the field of spatial information.An MMS database network gateway is designed to implement the connection of MMS and urban spatial database and the GIS application server.The authors design a map server which implements the normal GIS functions.This paper also introduces the programming method of MMS.When users send the MMS messages which have some regular forms given by the ISPs,the component of analyzing command will convert the messages to some SQL sentences and send them to the map server at the server side.This paper describes and analyses the scheme of this system.An example is given.Lastly,this paper points out the advantages and disadvantages of implementation of spatial information services by MMS.