【摘要】：星間鏈路是解決導(dǎo)航衛(wèi)星星座地面站位置與數(shù)量受限的極佳途徑,是導(dǎo)航系統(tǒng)發(fā)展的必然趨勢(shì)。而導(dǎo)航衛(wèi)星星座拓?fù)浣Y(jié)構(gòu)復(fù)雜,具有時(shí)變空變的特點(diǎn),需求和邊界條件眾多,如何規(guī)劃與調(diào)度星間鏈路相關(guān)資源是關(guān)系著星間鏈路能否發(fā)揮功能的關(guān)鍵所在。本文就星間鏈路的組網(wǎng)與傳輸協(xié)議相關(guān)理論與技術(shù)展開研究,研究方向具有良好的前瞻性,內(nèi)容與成果對(duì)導(dǎo)航星座星間鏈路網(wǎng)絡(luò)的建設(shè)具有一定的指導(dǎo)意義。本文的主要研究?jī)?nèi)容可概括為如下幾個(gè)方面:1.導(dǎo)航星座星間鏈路網(wǎng)絡(luò)基本模型的建立�；灸Ｐ桶ㄐ情g鏈路網(wǎng)絡(luò)的基本需求模型,建鏈拓?fù)淠Ｐ鸵约熬W(wǎng)絡(luò)協(xié)議模型。具體內(nèi)容包含星間鏈路網(wǎng)絡(luò)的應(yīng)用模式,拓?fù)鋵傩约翱梢娦缘姆治?鏈路代價(jià)分析等。2.基于STDMA接入模式下的星間鏈路網(wǎng)絡(luò)時(shí)隙規(guī)劃設(shè)計(jì)。本文根據(jù)星間鏈路的數(shù)據(jù)傳輸模式,提出了一種基于星間可見性與通信測(cè)量性能的“非時(shí)變鏈路+時(shí)變鏈路”的時(shí)隙規(guī)劃設(shè)計(jì)方案,并給出了衛(wèi)星故障下的規(guī)劃調(diào)整方案。3.面向?qū)Ш叫亲畔⒌臄?shù)據(jù)傳輸協(xié)議的設(shè)計(jì),本文結(jié)合傳統(tǒng)地面網(wǎng)絡(luò)協(xié)議TCP與標(biāo)準(zhǔn)空間傳輸協(xié)議SCPS-TP,針對(duì)本文所處的特殊應(yīng)用背景下,對(duì)傳輸層協(xié)議的各項(xiàng)功能進(jìn)行了設(shè)計(jì),提出了一種SNACK改進(jìn)方案——倒序SNACK應(yīng)答機(jī)制,并給出了傳輸層協(xié)議的幀格式和數(shù)據(jù)處理流程。4.最后為了驗(yàn)證設(shè)計(jì)方案的合理性與可行性,對(duì)所建立模型與設(shè)計(jì)內(nèi)容進(jìn)行的仿真實(shí)驗(yàn),從不同的角度詳細(xì)分析了在不同條件下的建鏈規(guī)劃與網(wǎng)絡(luò)傳輸?shù)男阅?最終得到的星間鏈路網(wǎng)絡(luò)其平均通信時(shí)延約為600ms,網(wǎng)絡(luò)吞吐率可在高速率高誤碼率(100kbps,10-4)的狀態(tài)下依舊維持在最佳狀態(tài)的80%左右,所設(shè)計(jì)的星間鏈路網(wǎng)絡(luò)能夠滿足當(dāng)前導(dǎo)航衛(wèi)星星座的應(yīng)用需要。
[Abstract]:Inter-satellite link is an excellent way to solve the limitation of the location and number of ground stations in navigation satellite constellation, and it is the inevitable trend of the development of navigation system. However, the topological structure of navigation satellite constellation is complex, it has the characteristics of time-varying space variation, and there are many requirements and boundary conditions. How to plan and schedule the related resources of inter-satellite link is the key to the function of inter-satellite link. In this paper, the theory and technology of inter-satellite link networking and transmission protocol are studied. The research direction is forward-looking, and the contents and achievements are of great significance to the construction of the inter-satellite link network of navigation constellation. The main contents of this paper can be summarized as follows: 1. The Establishment of the basic Model of Navigation Constellation Inter-satellite Link Network. The basic model includes the basic requirement model, the link topology model and the network protocol model of the inter-satellite link network. The specific contents include the application pattern of inter-satellite link network, the analysis of topology attribute and visibility, the analysis of link cost, etc. Time slot planning design of inter-satellite link network based on STDMA access mode. According to the data transmission mode of inter-satellite link, this paper presents a time slot planning and design scheme of "time-varying link" based on inter-satellite visibility and communication measurement performance, and presents the planning and adjustment scheme under satellite fault. 3. Based on the design of data transmission protocol for navigation constellation information, this paper designs the functions of transport layer protocol based on traditional terrestrial network protocol TCP and standard space transmission protocol SCPS-TP, aiming at the special application background of this paper. In this paper, an improved SNACK scheme-inverted SNACK response mechanism is proposed, and the frame format and data processing flow of transport layer protocol are given. 4. Finally, in order to verify the rationality and feasibility of the design scheme, the simulation experiments of the established model and design contents are carried out, and the performance of chain-building planning and network transmission under different conditions is analyzed in detail from different angles. The average communication delay of the resulting inter-satellite link network is about 600 Ms, and the throughput rate of the network can be maintained at about 80% of the optimal state at a high rate and high bit error rate (100 kbps, 10 kbps), and the average communication delay of the resulting inter-satellite link network is about 600 Ms. The designed inter-satellite link network can meet the needs of the current navigation satellite constellation application.
【學(xué)位授予單位】：國防科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN967.1

【引證文獻(xiàn)】

相關(guān)期刊論文 前2條

1 劉騏銘;馮旭哲;岳宇航;;面向?qū)Ш叫亲男情g傳輸協(xié)議測(cè)試系統(tǒng)設(shè)計(jì)[J];計(jì)算機(jī)測(cè)量與控制;2016年01期

2 劉騏銘;馮旭哲;;星載子網(wǎng)1553B總線數(shù)據(jù)傳輸與管理[J];宇航計(jì)測(cè)技術(shù);2015年05期

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本文編號(hào)：2430928