【摘要】 为了方便快捷地获取实时水情信息,对水情信息移动查询系统进行了设计开发。该系统客户端基于开源的嵌入式Linux和Qt/Embedded开发GIS查询软件,经GPRS移动接入GIS应用服务器,采用Oracle9i数据库统一管理服务器端空间数据和水情数据,GIS应用服务器以JDBC方式连接数据库,实现空间分析和水情信息查询,并以Socket方式将结果传回客户移动终端。应用实例表明了使用终端的GIS软件实现实时水情信息移动查询的可行性。更多还原

【Abstract】 In order to obtain the real-time hydrological information conveniently and timely,a mobile inquiry system for hydrological information is designed and developed.In this system,embedded GIS inquiry software based on open source embedded Linux and Qt/ Embedded is developed at the client side,and it accesses the GIS application server through GPRS.Server-side uniform management of the spatial data and hydrological data is realized by using Oracle9i,and the functions of spatial analysis and hydrological information inquiry are realized on the GIS application server,which is connected to the database by JDBC,and subsequently the query results will be returned to clients by means of Socket.An example of application of this system is presented to verify the feasibility of achieving mobile inquiry for real-time hydrological information by using the embedded GIS software.更多还原