摘要
在遥感数据服务系统中,为了快速高效地检索出用户需要的遥感数据信息,常使用PostgreSQL开源数据库的空间数据扩展PostGIS,模拟遥感数据服务系统的使用场景。从建立数据库索引、构建查询语句等方面入手,分析并设计了更高效、更适合遥感数据服务系统的数据库索引建立策略,证明了在遥感数据服务系统中,同时建立GIST空间索引和非空间属性索引更有效。
In the remote sensing data service system,in order to quickly and efficiently retrieve the remote sensing data information required by the user,it often simulates the usage scenario of the remote sensing data service system using PostGIS with the spatial data extension of the PostgreSQL open-source database.A simulation experiment is employed to conduct retrieval process in remote sensing data services.The simulation includes analysis of multiple query conditions and multiple query scales.Starting from the establishment of database indexes and query statements,the analysis and design of a more efficient and suitable database index establishment strategy for remote sensing data service system are carried out.It is more effective to establish GIST spatial index and non-spatial attribute index at the same time in the remote sensing data service system.
作者
陈文韬
特日根
CHEN Wentao;TE Rigen(Changguang Satellite Technology Co.,Ltd.,Changchun 130000,China;Key Laboratory of Satellite Remote Sensing Application Technology of Jilin Province,Changchun 130000,China;Changchun Institute of Optics,Fine Mechanics,and Physics,Changchun 130000,China)
出处
《测绘与空间地理信息》
2021年第7期78-83,共6页
Geomatics & Spatial Information Technology
基金
国家重点研发计划(2018YFB1004605)
吉林省科技计划——科技创新中心项目(20180623058TC)资助。
