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未来海战对舰艇通信网络传输提出了更高的要求。首先分析未来舰载通信系统网络传输需求,ATM技术是一种信息传输新技术。然后阐述了异步传输模式(ATM-Asynchronous Transfer Mode)基本要素及其特点,并就ATM技术在未来舰艇通信网的应用进行探讨,最后指出了应用ATM技术存在的问题。 相似文献
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The lack of a proper integration of strategic Air Traffic Management decision support tools with tactical Air Traffic Control interventions usually generates a negative impact on the Reference Business Trajectory adherence, and in consequence affects the potential of the Trajectory-Based Operations framework. In this paper, a new mechanism relaying on Reference Business Trajectories as a source of data to reduce the amount of Air Traffic Controller interventions at the tactical level while preserving Air Traffic Flow Management planned operations is presented. Artificial Intelligence can enable Constraint Programming as it is a powerful paradigm for solving complex, combinatorial search problems. The proposed methodology takes advantage of Constraint Programming and fosters adherence of Airspace User’s trajectory preferences by identifying tight interdependencies between trajectories and introducing a new mechanism to improve the aircraft separation at concurrence events considering time uncertainty. The underlying philosophy is to capitalize present degrees of freedom between layered Air Traffic Management planning tools, when sequencing departures at the airports by considering the benefits of small time stamp changes in the assigned Calculated Take-Off Time departures and to enhance Trajectory-Based Operations concepts. 相似文献
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AMT自动换档变速器在城市客车上的应用 总被引:2,自引:0,他引:2
介绍一种正在兴起的变速技术———AMT(Automated Mechanical Transmission)自动换档变速器,阐述其发展过程、工作原理、性能特点及其在城市客车上的应用前景。 相似文献
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随着高速列车课题研究的开展,高速列车控制中也遇到一些带有方向性和普遍性的问题,文章阐述了列车网络控制,自动列车防护,列车通信网络的介质和控制系统的接地等当前迫切需要解决的问题。 相似文献
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研究了ATM网中VBR编码的视频业务模型,提出一阶自回归、瑞利分布残差而不是高斯分布的AR序列模型-RAR(1)。实验表明,该模型能产生足够多的大信元帧数,这对于研究信元丢失率特性具有至关重要的影响,而且它的产生十分简单、实用,其自相关函数逼近负指数衰减;稳态概率分布可调整为Gamma分布和端利分布。以瑞利分布作为VBR比特率分布模型,统计复用的数值结果表明,在较少(16个)VBR信源复用时十分逼 相似文献
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针对我国高速公路上现行的光接入通信系统进行了分析,提出在SDH通信链路上可采取的ATM综合业务应用,给出了ATM信元格式在SDH帧离列之上的承载方式,以实现CTInet网络与高速公路光接入网络之间的拼接以及端到端的综合业务扩展应用。 相似文献
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