The Research And Implementation Of The Space Information Serving Integration System Of Beijing City

'Digital city' what we called is a system integrating technique of GIS, remote sensing, remote measure, Wide Band, multimedia, virtual emulator which makes automatic collection, dynamic menstruation and assistant decision-making serving for the infrastructure and function of the city. Space information serving integration system of Bei Jing (SIS.BJ for brief below) basing on 3S technique is a information infrastructure which deeply develop and utilize space information, serve layout, construction, administration of the city, serve gov., enterprise, public, serve the continual development of population, resource environment, society. The essentiality of SIS.BJ is to provide an infrastructure which offer accurate, Real-time space data to make the integrating and sharing of the information base on a unified space-time coordinates, and bring integrating of information into play and offer the omnidirectional information guarantee to exert all the function of Beijing city.The article analyzes the use condition and existent problem of the primary space information system of Beijing gov. In SIS.BJ we use J2EE, XML, network and other advanced technique which accord with international currency criterion and standard. This make the system possess powerful opening, distensible and transplantable capability. The system unify data format and interface which provide large space for the upgrade and expand of the system in the future. And the system is launched into practical operationThe mainly contribution:1. Upgrade the speed of gov. querying, manage and feedback to the space information. Promote the gov. efficiency and become an indispensably part of gov. environment.2. Unify data format and inerface which provide large space for the upgrade and expand of the system in the future.3. Accelerate the sharing of information between cities, avoid repetition building and investment, brings great convenience to citizen life. Meanwhile, it indicates that the Beijing government has big improved on high efficient integration city management using modern technology, city information construction and city modernization construction.