海洋遥感数据传输系统研究与设计
发布时间：2018-10-11 18:26
【摘要】：为了满足航行过程中海洋遥感数据稳定传输需求,解决在不稳定的环境下对等网络系统(P2P系统)各节点间高效共享遥感数据难题,本文从海洋遥感数据传输和系统容错两个方面开展研究,攻克了海洋遥感数据在船舶间可靠传输的技术难点。主要研究内容如下：一、海洋遥感数据的归一化管理方法和高效共享技术研究。利用多级地理空间格网数据屏蔽海洋遥感数据的异构特征,实现异构遥感数据的归一化管理；利用改进后的TCP/IP协议运行策略,提高带宽使用效率,实现延迟网络中遥感数据的高效传输；通过中心节点管理调配数据分发任务,实现多节点遥感数据并行传输,提高系统网络资源的使用效率。二、不同通信状态下的海洋遥感数据传输系统容错方法研究。海洋不具备稳定的数据通信环境,会引发P2P系统节点通信频繁中断,文中通过优化P2P分布式架构容错策略,提高系统的抗灾能力；利用多数据站点互补数据续传方法,解决多数据站点间相互配合补充、续传数据的应用难题；利用全新容错机制的中心节点选举方法,提高节点选举的可靠程度和参考意义。基于以上研究内容,设计并实现了船舶出海环境下海洋遥感数据传输平台原型系统。系统解决了异构空间遥感数据统一管理的难题,实现了船舶航行中遥感数据高效共享目标。通过仿真实验证明,使用P2P架构的海洋遥感数据传输系统具有良好的伸缩性、独立性、稳定性和高效性。
[Abstract]:In order to meet the requirements of the stable transmission of marine remote sensing data during navigation, the problem of sharing remote sensing data among the nodes of peer-to-peer network system (P2P) in unstable environment is solved. In this paper, two aspects of marine remote sensing data transmission and system fault tolerance are studied, and the technical difficulties of reliable marine remote sensing data transmission between ships are overcome. The main contents are as follows: first, the normalized management method and efficient sharing technology of ocean remote sensing data. The heterogeneous features of ocean remote sensing data are shielded by multilevel geo-spatial grid data, the normalized management of heterogeneous remote sensing data is realized, and the improved TCP/IP protocol is used to improve the bandwidth utilization efficiency. The efficient transmission of remote sensing data in the delay network is realized, and the multi-node remote sensing data parallel transmission is realized through the management of the central node to distribute the data, and the efficiency of using the system network resources is improved. Secondly, fault-tolerant methods for marine remote sensing data transmission systems in different communication states are studied. The ocean does not have a stable data communication environment, which will lead to frequent interruption of P2P node communication. In this paper, the fault-tolerant strategy of P2P distributed architecture is optimized to improve the disaster resilience of the system. In order to solve the problem of mutual cooperation and supplement among multi-data sites and continue to transmit data, the new fault-tolerant mechanism of central node election method is used to improve the reliability and reference significance of node election. Based on the above research content, the prototype system of marine remote sensing data transmission platform is designed and implemented. The system solves the problem of unified management of heterogeneous spatial remote sensing data and realizes the goal of efficient sharing of remote sensing data in ship navigation. The simulation results show that the marine remote sensing data transmission system based on P2P architecture has good scalability, independence, stability and efficiency.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U675.79
本文编号：2264806
[Abstract]:In order to meet the requirements of the stable transmission of marine remote sensing data during navigation, the problem of sharing remote sensing data among the nodes of peer-to-peer network system (P2P) in unstable environment is solved. In this paper, two aspects of marine remote sensing data transmission and system fault tolerance are studied, and the technical difficulties of reliable marine remote sensing data transmission between ships are overcome. The main contents are as follows: first, the normalized management method and efficient sharing technology of ocean remote sensing data. The heterogeneous features of ocean remote sensing data are shielded by multilevel geo-spatial grid data, the normalized management of heterogeneous remote sensing data is realized, and the improved TCP/IP protocol is used to improve the bandwidth utilization efficiency. The efficient transmission of remote sensing data in the delay network is realized, and the multi-node remote sensing data parallel transmission is realized through the management of the central node to distribute the data, and the efficiency of using the system network resources is improved. Secondly, fault-tolerant methods for marine remote sensing data transmission systems in different communication states are studied. The ocean does not have a stable data communication environment, which will lead to frequent interruption of P2P node communication. In this paper, the fault-tolerant strategy of P2P distributed architecture is optimized to improve the disaster resilience of the system. In order to solve the problem of mutual cooperation and supplement among multi-data sites and continue to transmit data, the new fault-tolerant mechanism of central node election method is used to improve the reliability and reference significance of node election. Based on the above research content, the prototype system of marine remote sensing data transmission platform is designed and implemented. The system solves the problem of unified management of heterogeneous spatial remote sensing data and realizes the goal of efficient sharing of remote sensing data in ship navigation. The simulation results show that the marine remote sensing data transmission system based on P2P architecture has good scalability, independence, stability and efficiency.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U675.79
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