本文選題：空間信息網(wǎng) + 組網(wǎng)��； 參考：《北京郵電大學》2015年碩士論文

【摘要】：作為地面網(wǎng)絡的延伸以及衛(wèi)星網(wǎng)絡的拓展,空間信息網(wǎng)(Space Information Network, SIN)因其覆蓋面廣、組網(wǎng)靈活、建網(wǎng)快以及不受地理環(huán)境限制等優(yōu)點,可以為各種空間任務提供集成式的通信服務。然而隨著信息化以及通信業(yè)務的發(fā)展,現(xiàn)代信息社會對空間信息網(wǎng)的組網(wǎng)能力也提出了更高的要求,以尋求更全面的服務范圍、更優(yōu)質(zhì)的服務質(zhì)量。因此本論文致力于空間信息網(wǎng)中的組網(wǎng)關鍵技術的研究,從網(wǎng)絡結構設計、拓撲控制、接入控制三個角度提高空間信息網(wǎng)的組網(wǎng)能力。 本論文在深入研究空間信息網(wǎng)研究現(xiàn)狀的基礎上,重點研究了星座結構設計、多拓撲路由以及接入退避算法,論文的主要創(chuàng)新性研究成果如下： (1)在分析衛(wèi)星網(wǎng)絡星座結構設計原則的基礎上,提出了GEO/MEO/LEO星座結構設計方案,仿真研究了所提星座結構的對地覆蓋時長以及覆蓋百分比性能,研究結果表明所提的星座結構具有百分百覆蓋地球表面并且提供180s以上連續(xù)覆蓋時間的性能。 (2)設計了一種空間信息網(wǎng)中面向任務的多拓撲路由算法,根據(jù)業(yè)務的QoS (Quality of Service)要求以及空間信息網(wǎng)中的空間節(jié)點忙碌度為業(yè)務設定不同的子拓撲,進行路由和數(shù)據(jù)的傳輸。仿真研究了所提算法對網(wǎng)絡吞吐量、時延性能以及鏈路利用率的改進,研究結果表明論文中提出的多拓撲路由算法可以有效地提升業(yè)務的吞吐量、降低業(yè)務傳輸時延并提高網(wǎng)絡的鏈路利用率,并且在網(wǎng)絡負載較大的情況之下改進的效果更明顯。 (3)在分析空間信息網(wǎng)的接入策略以及經(jīng)典退避算法的基礎上,提出了一種基于灰色模型的時隙ALOHA接入退避算法,采用灰色系統(tǒng)中的GM(1,1)模型對空間信息網(wǎng)中的信道接入成功率進行預測,并由此判斷當前網(wǎng)絡狀態(tài),以自適應的設置時隙ALOHA接入算法的退避重發(fā)等待時間,增強退避重發(fā)的成功率。仿真研究了所提算法中GM(1,1)的預測精度、所提算法對吞吐量和時延的改進,研究結果表明,GM(1,1)模型可以對信道接入成功率進行高精度的預測,并且該算法可以有效地提升系統(tǒng)的吞吐量,降低網(wǎng)絡傳輸時延。
[Abstract]:As the extension of terrestrial network and the expansion of satellite network, Space Information Network (sins) can provide integrated communication services for various space missions because of its wide coverage, flexible networking, fast network construction and no restriction of geographical environment. However, with the development of information and communication services, the modern information society has put forward higher requirements for the networking capability of the spatial information network, in order to seek more comprehensive service scope and better service quality. Therefore, this paper is devoted to the research of the key technologies in the space information network, and improves the networking capability of the space information network from three aspects: network structure design, topology control and access control. Based on the research status of spatial information network, this paper focuses on constellation structure design, multi-topology routing and access Backoff algorithm. The main innovative research results are as follows: 1) based on the analysis of satellite network constellation structure design principle, a GEO / MEO / Leo constellation structure design scheme is proposed. The performance of the proposed constellation structure for the coverage duration and coverage percentage is studied by simulation. The results show that the proposed constellation structure has the capability of covering the earth's surface 100% and providing a continuous coverage time of more than 180s. A task-oriented multi-topology routing algorithm in the spatial information network is designed. According to the requirement of QoS quality of Service and the busy degree of spatial nodes in the spatial information network, different sub-topologies are set for the service to route and transmit data. Simulation results show that the proposed multi-topology routing algorithm can effectively improve the throughput of the network, delay performance and link utilization. It can reduce the delay of traffic transmission and improve the link utilization ratio of the network, and the effect of the improvement is more obvious when the network load is large. (3) based on the analysis of the access strategy of the spatial information network and the classical Backoff algorithm, In this paper, a timeslot Aloha Backoff algorithm based on grey model is proposed. The GMM1 / 1) model in grey system is used to predict the success rate of channel access in spatial information network, and the current network status is judged. In order to enhance the success rate of Backoff retransmission, the adaptive time slot setting Aloha access algorithm is used to improve the Backoff retransmission waiting time. Simulation results show that the proposed algorithm can predict the channel access success rate with high accuracy, and the proposed algorithm improves the throughput and time delay of the proposed algorithm, and the simulation results show that the proposed algorithm can be used to predict the channel access success rate with high precision, and the simulation results show that the proposed algorithm can predict the channel access success rate with high precision. The algorithm can effectively improve the throughput of the system and reduce the network transmission delay.
【學位授予單位】：北京郵電大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN915.05

【參考文獻】

相關期刊論文 前10條

1 陳成;邢立寧;譚躍進;;求解多機協(xié)同任務規(guī)劃的改進遺傳算法[J];兵工自動化;2010年09期

2 妥艷君;劉云;李艷;;LEO/MEO星座組網(wǎng)設計與分析[J];電子科技大學學報;2010年01期

3 吳廷勇;吳詩其;;LEO/MEO雙層衛(wèi)星網(wǎng)絡層間星際鏈路建立策略的性能研究[J];電子與信息學報;2008年01期

4 沈榮駿;;我國天地一體化航天互聯(lián)網(wǎng)構想[J];中國工程科學;2006年10期

5 葉寧;王倩秋;李盛利;;空間信息網(wǎng)基于服務的拓撲控制算法[J];東北大學學報(自然科學版);2012年11期

6 沈超;;分布式協(xié)同入侵檢測系統(tǒng)模型的設計[J];科技信息;2008年36期

7 蘇海武;程良倫;;一種流量預測的服務質(zhì)量區(qū)分MAC退避算法[J];計算機應用研究;2013年10期

8 ;Development of environmental monitoring satellite systems in China[J];Science China(Earth Sciences);2010年S1期

9 張兆豐,韋崗;用于移動Internet隨機接入的一種新方式[J];通信學報;2003年04期

10 張民;羅光春;王俊峰;黃蕾;;空間信息網(wǎng)絡可靠傳輸協(xié)議研究[J];通信學報;2008年06期

相關博士學位論文 前3條

1 黃操;面向?qū)拵EO衛(wèi)星網(wǎng)的組網(wǎng)研究[D];中國科學技術大學;2011年

2 吳廷勇;非靜止軌道衛(wèi)星星座設計和星際鏈路研究[D];電子科技大學;2008年

3 劉軍;空間信息網(wǎng)安全組網(wǎng)關鍵技術研究[D];東北大學;2008年

，

本文編號：2030890