基于北斗网格的影像数据REST Web服务系统

REST Web Service System for Image Data Based on Beidou Grid

多源异构对地观测(Earth Observation,EO)数据的应用已经深入到国民经济建设的各个领域。然而,不同类型、不同来源、不同部门的数据给空间信息的共享带来了极大的挑战,地球剖分网格和Web服务的结合为多源异构数据的共享问题提供了解决思路。其中,北斗网格具有剖分结构简单、易于使用的特点,可以辅助检索影像数据;Web服务可用于北斗网格码标识下的影像数据检索。因此,本文以北斗网格为参考,建立网格与影像数据的映射关系,提出一种遥感影像数据的北斗网格描述方法和影像数据获取方法,并在RESTful架构的基础上,设计一个北斗网格影像描述Web服务和基于北斗网格码的影像数据获取Web服务原型,实现在同一参考框架下以网格为单元的影像数据互操作。

Multi-source and heterogeneous Earth Observation(EO)data is widely used in different fields of national economic construction.However,different spatial reference frames have been increasingly adopted for data of different types,sources and sectors,which pose a big challenge to the sharing of spatial information of different reference frames.Promisingly,the combination of global subdivision grid and Web services provides a fine solution to such a problem.Among them,the Beidou grid has the characteristics of simple segmentation structure and easy to use,which can assist in retrieving image data.Web services can be used for image data retrieval under the Beidou grid code identification.Therefore,this paper takes the Beidou grid as a reference,establishes the mapping relationship between grid and image data,proposes a Beidou grid description method and image data acquisition method for remote sensing image data,and designs a prototype of Beidou grid image description Web service and Beidou grid code based image data acquisition Web service based on RESTful architecture,achieving interoperability of image data using grid as a unit under the same reference framework.