Establishment And Application Of Private Cloud Platform For Remote Sensing Image Data Based On Hadoop

In recent years,the continuous growth of digital information has led to the outbreak of data around the world.The demand for data storage and information mining has greatly promoted the development of big data technology.Remote sensing is a detection technology for the surface of the earth.With the continuous change of the spatial resolution,time resolution,spectral resolution and radiative resolution of the remote sensing image,the remote sensing image data is increasing.Remote sensing image data are faced with many problems,such as large amount of data,difficult storage,high storage cost,data sharing bottleneck,various data types,and difficult management of image data.It is of great significance to solve the problems faced by remote sensing image data in combination with big data technology.Referring to the storage architecture used by remote sensing image data service providers at home and abroad,construct a private cloud platform for remote sensing image data based on Hadoop.The platform uses Arc GIS Server to store and publish remote sensing image metadata as map service,and uses Arc GIS Web App Builder to construct online query application.The remote sensing image data is store on HDFS.At the same time,the storage path of the corresponding remote sensing image data in the HDFS is added to the attribute of the map service layer to realize the mapping between the image metadata and the image data.Based on Hadoop API,the private cloud platform is constructed to support the online attribute query and spatial query of remote sensing image metadata,which you can obtain the path of the image data that stored in HDFS and download it.Based on CDH cluster,the function of platform is mean to extend to maximize the use of cluster resources and mine remote sensing image data information.Based on the existing operating environment and test results,it is reliable to use CDH cluster as a production environment,and it is feasible to build private cloud platform based on Hadoop and GIS.It can be applied to the storage,retrieval and management of remote sensing image data.Taking the remote sensing image data of ZY-02 C as an example,the private cloud platform of remote sensing image data can realize the online retrieval of remote sensing image metadata and the rapid download of remote sensing image data.To a certain extent,the platform can solve the problem of remote sensing image data storage,data sharing and data management.