【作者】 陈荦； 刘云翔； 唐宇； 景宁；

【机构】 国防科技大学电子科学与工程学院；

【摘要】 <正>1引言遥感及其它数据获取技术的应用使地球空间数据量迅速增加,内容与形式的多元化、数据存储的分散化已成为空间数据存在的不可忽视的特征。另外,应用问题的复杂化、所涉及内容领域的多样化,要求跨地域、跨部门地使用多种数据源,所以在实际中,更多还原

【Abstract】 This paper focuses on the issues of spatial service integration,the process of combining or pipelining results from several complementary and interoperable GIS or Non GIS Web Services to create a customized solution. The paper presents an approach to model spatial service into service chain based on priority graph.With this approach, single Web services can be integrated into one complex and extensible service chain.A flow control model and a script language are also proposed and tested in a prototype system,a sample spatial service application is implemented.更多还原