【摘要】：為了滿足航行過程中海洋遙感數(shù)據(jù)穩(wěn)定傳輸需求,解決在不穩(wěn)定的環(huán)境下對(duì)等網(wǎng)絡(luò)系統(tǒng)(P2P系統(tǒng))各節(jié)點(diǎn)間高效共享遙感數(shù)據(jù)難題,本文從海洋遙感數(shù)據(jù)傳輸和系統(tǒng)容錯(cuò)兩個(gè)方面開展研究,攻克了海洋遙感數(shù)據(jù)在船舶間可靠傳輸?shù)募夹g(shù)難點(diǎn)。主要研究內(nèi)容如下：一、海洋遙感數(shù)據(jù)的歸一化管理方法和高效共享技術(shù)研究。利用多級(jí)地理空間格網(wǎng)數(shù)據(jù)屏蔽海洋遙感數(shù)據(jù)的異構(gòu)特征,實(shí)現(xiàn)異構(gòu)遙感數(shù)據(jù)的歸一化管理；利用改進(jìn)后的TCP/IP協(xié)議運(yùn)行策略,提高帶寬使用效率,實(shí)現(xiàn)延遲網(wǎng)絡(luò)中遙感數(shù)據(jù)的高效傳輸；通過中心節(jié)點(diǎn)管理調(diào)配數(shù)據(jù)分發(fā)任務(wù),實(shí)現(xiàn)多節(jié)點(diǎn)遙感數(shù)據(jù)并行傳輸,提高系統(tǒng)網(wǎng)絡(luò)資源的使用效率。二、不同通信狀態(tài)下的海洋遙感數(shù)據(jù)傳輸系統(tǒng)容錯(cuò)方法研究。海洋不具備穩(wěn)定的數(shù)據(jù)通信環(huán)境,會(huì)引發(fā)P2P系統(tǒng)節(jié)點(diǎn)通信頻繁中斷,文中通過優(yōu)化P2P分布式架構(gòu)容錯(cuò)策略,提高系統(tǒng)的抗災(zāi)能力；利用多數(shù)據(jù)站點(diǎn)互補(bǔ)數(shù)據(jù)續(xù)傳方法,解決多數(shù)據(jù)站點(diǎn)間相互配合補(bǔ)充、續(xù)傳數(shù)據(jù)的應(yīng)用難題；利用全新容錯(cuò)機(jī)制的中心節(jié)點(diǎn)選舉方法,提高節(jié)點(diǎn)選舉的可靠程度和參考意義。基于以上研究內(nèi)容,設(shè)計(jì)并實(shí)現(xiàn)了船舶出海環(huán)境下海洋遙感數(shù)據(jù)傳輸平臺(tái)原型系統(tǒng)。系統(tǒng)解決了異構(gòu)空間遙感數(shù)據(jù)統(tǒng)一管理的難題,實(shí)現(xiàn)了船舶航行中遙感數(shù)據(jù)高效共享目標(biāo)。通過仿真實(shí)驗(yàn)證明,使用P2P架構(gòu)的海洋遙感數(shù)據(jù)傳輸系統(tǒng)具有良好的伸縮性、獨(dú)立性、穩(wěn)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.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U675.79

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