分布式空间数据库在海量卫星影像管理中的应用

针对现有影像存储方法在海量卫星影像存储中性能不足的问题，分析了现有卫星影像数据存储方法的特点，提出了基于分布式空间数据库管理影像元数据的改进方法。该方法采用文件系统存储影像非结构化的实体数据，影像的空间信息及元数据存储在分布式空间数据库中，实现了海量卫星影像数据的高性能存储，并开展了资源三号卫星影像数据管理试验。试验表明该方法在海量卫星影像数据查询性能方面有显著提高，适用于海量卫星影像数据存储。

Application of Distributed Spatial Database in Massive Satellite Images Management

Aiming at the problem that the existing satellite image storage solutions have poor performance in massive image data,this paper gives the analysis of characteristics of the existing satellite image data storage solutions,and puts forward an improved solution based on distributed spatial database to manage the image metadata.This solution utilized file system to store unstructured entity data of satellite image,in the same time,the spatial information and image metadata is stored in distributed spatial database.As a result,it achieves the high performance storage of unstructured image data.ZY-3 satellite image data management experiment has been carried out,and it shows that this solution is of a significant improvement in the query performance of massive satellite image data,and it is suitable for the storage of massive satellite image data.