Application of ICTs in Airspace Management and Collaborative Decision-Making—Analyzing the Risk Avoidance in the Condition of Risky Weather as an Example     

Du Xinru  Lu Zi 《地球科学进展》2016,31(3):269-276

The application of ICTs makes structural change of the development and effective utilization of airspace. Next generation air transportation system (NextGen) includes new automation concepts with automated information to support the traffic control decision-making. As a result, in the field of academia and industry, air traffic controllers integrate information automatically while making decisions to change the previous manually integrated and decided pattern. The safety ability of airspace is reduced and airspace system is endangered under risky weather conditions of airspace. So there is an urgent demand for new information and communication technologies. The paper is an overview of the information constitution and support of NextGen and provides the study of the development of technique of airspace collaborative decision-makings to confirm the new features based on ICTs. It contains basic application-the input of data and output of the routes of airspace management and collaborative decision-making, and general application-the choose of probability nets of avoiding risky weather, and special application-the affection in the management of the air routes, which are made up of position and direction. The research shows the accurate schedule characteristics of airspace management and collaborative decision-making based on ICTs, which made the space accurate by time accurate. Second, the visualization of airspace management and collaborative decision-making based on ICTs made the maps of flight path under mobile data quickly generated. This could make the fully development and utilization of national airspace, ensure safety, and reduce air traffic controllers’ workload and the costs in delaying and operating in risky weather.  相似文献   

Community‐Derived Standards for LA‐ICP‐MS U‐(Th‐)Pb Geochronology – Uncertainty Propagation,Age Interpretation and Data Reporting          下载免费PDF全文

Matthew S. A. Horstwood  George Gehrels  Simon E. Jackson  Noah M. McLean  Chad Paton  Norman J. Pearson  Keith Sircombe  Paul Sylvester  Pieter Vermeesch  James F. Bowring  Daniel J. Condon  Blair Schoene 《Geostandards and Geoanalytical Research》2016,40(3):311-332

The LA‐ICP‐MS U‐(Th‐)Pb geochronology international community has defined new standards for the determination of U‐(Th‐)Pb ages. A new workflow defines the appropriate propagation of uncertainties for these data, identifying random and systematic components. Only data with uncertainties relating to random error should be used in weighted mean calculations of population ages; uncertainty components for systematic errors are propagated after this stage, preventing their erroneous reduction. Following this improved uncertainty propagation protocol, data can be compared at different uncertainty levels to better resolve age differences. New reference values for commonly used zircon, monazite and titanite reference materials are defined (based on ID‐TIMS) after removing corrections for common lead and the effects of excess ²³⁰Th. These values more accurately reflect the material sampled during the determination of calibration factors by LA‐ICP‐MS analysis. Recommendations are made to graphically represent data only with uncertainty ellipses at 2s and to submit or cite validation data with sample data when submitting data for publication. New data‐reporting standards are defined to help improve the peer‐review process. With these improvements, LA‐ICP‐MS U‐(Th‐)Pb data can be considered more robust, accurate, better documented and quantified, directly contributing to their improved scientific interpretation.  相似文献   

盐湖卤水数据采集系统中的通信方法          下载免费PDF全文

陈芳  祁永唐 《盐湖研究》1995,3(3):74-78

介绍了盐湖卤水动态自劝观测系统中单片机数据采集系统与智能测钾仪及智能水位计之间的通信。前者来用并行通信，后者采用串行通信．分别介绍了两种通信方式的硬件接口和程序设计。  相似文献   

8680 X荧光光谱仪与长城0520-CH计算机的数据通信     

杨学东 《岩矿测试》1990,(2)

8680X荧光光谱仪采用RSX-11M多用户操作系统。本文将0520计算机作为RSX-11M主机的一个从属终端,设计了相应软件与8680联机。无需修改任何硬件,在0520上可以执行RSX-11M的全部操作指令,并且只要8680主机不关闭,0520计算机即可随时从8680的磁盘上读取数据而不需事先与8680的操作者约定,传送数据快速、准确。  相似文献   

数字环境下的地图传输     

李伟生 《武汉大学学报(信息科学版)》1994,(4)

根据数字编码与处理特征，对地图传输理论进行了重新分析，建立了数字地图传输模型．  相似文献   

心象地图在制图传输中的作用   总被引：1，自引：0，他引：1  

钟家杰 《测绘学院学报》1989,(1)

制图传输是制图学的重要研究领域。本文从认知制图的角度,探讨了心象地图在制图传输中的作用;着重分析了心象地图和地图之间的内在联系,指出了人的认知制图能力的客观存在是制图传输得以进行的真正原因;在此基础上,提出了制图传输的扩展模式,增加了从读图者到次读图者之间的传输过程,并从内容和形式等方面分析了它的特殊性,以期完善制图传输模式。  相似文献   

HD-STGPS超站仪数据通信的实现     

巢佰崇  张正禄  黄全义  罗年学  郭际明 《测绘信息与工程》2002,27(3):38-39

介绍了HD－STGPS超站仪的数据电台和GSM两种数据通信的设计，讨论了GPS数据通信的协议和程序实现方法。  相似文献   

IP网络技术的现状及其多媒体应用研究   总被引：1，自引：0，他引：1  

孙华怡  喻占武  李德仁  胡瑞敏 《武汉大学学报(信息科学版)》2002,27(6):652-656

介绍了IP网络的现状、实现方式以及发展趋势，并分析了基于IP网络的多媒体通信若干技术和应用。  相似文献   

支持ITU-T H.324协议的桌面式可视电话系统   总被引：4，自引：0，他引：4  

胡瑞敏  李德仁  喻占武  沈未名 《武汉大学学报(信息科学版)》2002,27(1):9-16

介绍了支持ITU－TH．324协议的桌面式可视电话系统VP324的系统原理、总体构成及各个子系统的实现方法，论述了VP324系统中一系列难点的实现策略和主要性能指标。该系统视频清晰流畅，传输帧率最高可达25帧／s，单路时延不超过350ms，在有效带宽仅12k时仍然能够正常工作。  相似文献   

利用VSAT网络实现GPS差分数据传输     

武军郦 《全球定位系统》2002,27(3):20-23

主要讨论了GPS差分基准站与数据中心之间差分信息的传输。介绍了GPS差分网络系统的组成和VSAT卫星通信情况与优势，利用网络技术，以VSAT系统为实例研究了基准站与数据中心之间的实时信息传输，同时通过软件开发完成了数据中心利用VSAT网络对差分基准站的监控。  相似文献