支持访问控制的P2P大规模遥感数据分发系统

发布时间：2018-06-18 07:23

本文选题：遥感数据分发 + PP　；参考：《计算机科学》2017年11期

【摘要】：遥感数据日益增长,大规模遥感数据分发对集中分发服务器构成了巨大压力。充分利用参与下载节点的网络资源,提出并实现了一种支持访问控制的P2P大规模遥感数据分发系统。遥感数据分发系统分为遥感数据管理平台和遥感数据客户端两部分,遥感数据管理平台包含共享分发平台网站、云存储、种子资源服务器和跟踪服务器4个组件,遥感数据各客户端和种子资源服务器构成P2P网络。设计了包括共享分片、分片选择、跟踪器通信等的P2P协议,实现的遥感数据分发系统能够上传遥感数据并自动做种,支持对用户的访问控制。根据用户权限进行下载,各下载节点共享分片,然后基于类Bittorrent协议来加速遥感数据的分发。实验结果表明,实现的大规模遥感数据分发系统的功能完善,在多节点下载时具备良好的并发性能,能够满足大规模遥感数据分发的需要。
[Abstract]:With the increasing of remote sensing data, the distribution of remote sensing data on a large scale is a great pressure on the centralized distribution server. A P2P large-scale remote sensing data distribution system supporting access control is proposed and implemented by making full use of the network resources of the download nodes. Remote sensing data distribution system is divided into two parts: remote sensing data management platform and remote sensing data client. Remote sensing data management platform includes four components: shared distribution platform website, cloud storage, seed resource server and tracking server. Remote sensing data client and seed resource server constitute P2P network. A P2P protocol is designed, which includes sharing slice, slice selection, tracker communication and so on. The remote sensing data distribution system can upload remote sensing data and do species automatically, and support user access control. According to the user rights, each download node shares slices, and then accelerates the distribution of remote sensing data based on Bittorrent protocol. The experimental results show that the large scale remote sensing data distribution system has perfect function and good concurrency performance when it is downloaded by many nodes, and it can meet the needs of large-scale remote sensing data distribution.
【作者单位】：桂林电子科技大学认知无线电与信息处理教育部重点实验室;中国电子科技集团公司航天信息应用技术重点实验室;
【基金】：国家自然科学基金(61661015,61201250) 认知无线电与信息处理教育部重点实验室主任基金(CRKL160101) 云计算与复杂系统高校重点实验室基金(YD16801) 中国电子科技集团公司航天信息应用技术重点实验室开放课题资助
【分类号】：TP309;TP79

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