基于业务状态的飞行器网络混合多址接入方案研究

发布时间：2018-03-28 17:37

本文选题：数据链　切入点：组网技术　出处：《哈尔滨工业大学》2014年硕士论文

【摘要】：现代信息化战争早已摆脱单一化作战方式，上升至体系与体系的对抗。作为连接各作战单元的数据链及时共享战场态势信息，缩短战场反应时间，提高作战效率，成为主导战场形势、决定战争结果的核心因素。其中，MAC协议描述了网络内各节点接入信道时需要遵守的规则，对于网络资源的合理、高效、公平利用至关重要。本文在飞行器组网飞行背景下，重点针对网络节点快速接入方式进行研究。结合网络内不断变化的业务状态，设计出满足实际应用需求的混合多址接入方式，解决协同网络无线资源合理、高效利用问题，提高系统资源利用率、减小传输时延。首先，对国内外数据链的发展现状进行综述，重点关注现有数据链中使用的各种MAC协议，通过分析得出TDMA是空-空、空-地数据链MAC协议的首选方式。其次，搭建空间飞行器网络基本构架。选择具有良好扩展性和灵活性的分级网络拓扑结构。结合飞行器编队不同飞行阶段业务特点，设计出基于TDMA的混合多址接入方式。确定网络初始化方案和节点入网/退网方案，解决动态组网问题，以适应瞬息万变的战场态势。再次，提出基于压缩感知的预约多址接入方法，，作为混合多址接入方式重要组成部分，可有效缩短信道预约时间，提高网络数据传输效率。最后，通过仿真分析得出结论。针对不断变化的业务状态，相比于单一接入方式，混合多址接入方式具有更好的网络性能指标，在满足战术要求的前提下，最大程度提升网络性能。作为自适应多址接入方式的雏形，混合多址接入方式的提出将具有更加深远的意义。
[Abstract]:The modern information warfare has long been rid of the single combat mode and has risen to the confrontation between the system and the system. As a data link connecting various combat units, it shares battlefield situation information in a timely manner, shortens the battlefield reaction time, and improves the combat efficiency. The MAC protocol describes the rules to be followed when each node in the network accesses the channel, which is very important for the rational, efficient and fair utilization of network resources. In this paper, under the background of aircraft networking flight, the research is focused on the fast access mode of network nodes. Combined with the changing service status in the network, a hybrid multiple access mode is designed to meet the practical application requirements. To solve the problem of rational and efficient utilization of wireless resources in cooperative networks, improve the utilization of system resources and reduce the transmission delay. First of all, the development of domestic and foreign data links is reviewed, focusing on various MAC protocols used in the existing data links. Through analysis, it is concluded that TDMA is the preferred method of space-air and space-ground data link MAC protocols. Secondly, the basic framework of space vehicle network is built. The hierarchical network topology with good expansibility and flexibility is selected. A hybrid multiple access scheme based on TDMA is designed and the network initialization scheme and node access / de-network scheme are determined to solve the dynamic networking problem in order to adapt to the rapidly changing battlefield situation. Thirdly, as an important part of hybrid multiple access mode, a compressed perception based reservation multiple access method is proposed, which can effectively shorten the channel reservation time and improve the efficiency of network data transmission. Finally, through simulation analysis, the conclusion is drawn. Compared with single access mode, hybrid multiple access mode has better network performance than single access mode, and meets the requirements of tactics. As the embryonic form of adaptive multiple access, hybrid multiple access will have more profound significance.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.532

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