共查询到20条相似文献,搜索用时 93 毫秒
1.
2.
目前,ATM数据通信网作为承载各种空管业务的主用通信网络,面临着广域网技术衰落、网络安全有待加强和新业务拓展能力差等挑战。未来,下一代空管系统将是以空、天、地一体化网络平台下的通信、导航、监视系统为基础,整合当前按地域和专业分割的信息子系统,最大程度地及时共享各种空管业务信息,增强空管部门协同决策的 相似文献
3.
4.
5.
国际民航组织(ICAO)倡导雷达管制移交和话音管制移交互为备份手段,民航空管语音交换系统在空管设备保障业务中起到了越来越重要的作用.本文介绍了民航空管语音交换系统在民航空管业务中的作用和地位;阐述了目前民航空管语音交换设备的发展水平,并分析了民航空管语音交换系统的最新技术动态. 相似文献
6.
7.
《中国民用航空》2014,(5):80-80
<正>1.民航深圳空管站郑阳3月17日,深圳空管站对老塔台内话系统进行了拆除,在清点资产后移交给珠海进近管制中心。2.民航天津空管分局卢文志3月17日,天津空管分局管制运行部正式启动2014年度管制员复训工作。3.民航河北安全监督管理局崔勇3月20日-21日,民航华北管理局党委书记、副局长王瑞萍率领调研组一行,赴石家庄开展京津冀民航运输协同发展调研。4.东航昆明维修基地赵银华3月21日,东航昆明维修基地首次完成A330定检维修工作。5.民航华北空管局陈德媛吴冰屈人杰3月24日,华北空管局完成了北京区管中心综合电报处理系统前置接口新接口服务器的上线工作。 相似文献
8.
ReformsNeededtoDevelopAirTrafficManagementBureauofNorthChina20年来,随着我国民航事业的蓬勃发展,我国的空中交通管制系统总体保障能力也取得了长足的进步。作为全国民航七大空中交通管制系统之一的民航华北空管系统,无论在基础设施建设、设备更新与改造、空域调整,还是在管制手段、管制方式及人员业务素质等方面,都有了较明显的改善和提高。尤其是1997年12月30日,北京终端区实现雷达管制,标志着华北空管系统的建设与发展向国际化、标准化的方向实现了质的飞跃。一、华北空管事业在改革与发展中前进华北空管系统地处北京,肩… 相似文献
9.
一、我国空管系统信息化存在的问题我国空管信息化应用起步较晚,一些现实问题已经严重制约了空管的发展。目前的空管信息化系统,存在着"重视原始数据的采集和网络传输,轻视关联业务信息的挖掘整合,缺少智能化的辅助决策能力"的严重不足,极大地降低了空中交通管理的效率。同时,信息管理模式落后,仍采用传统的网状信息管理模式。空管信息化过程中的矛盾主要表现在以下三个方面。 相似文献
10.
近年来随着民航业务的不断扩展,卫星通信在民航空管通信网络中的应用越来越广泛,开通了大量的新业务,本文具体介绍了其中的几种应用。 相似文献
11.
差值法与比值法对不同测量系统的误差修正效果不一样。本文将两种方法的比较用一个比值来描述,并用推得的公式进行量化表示。在进一步的应用研究中,理论分析与实验数据相互印证,同时得到许多有益的结论,有助于全面掌握测量系统的误差来源,从而灵活选择各种修正方法以获得更加准确的测量结果。 相似文献
12.
李稷 《民用飞机设计与研究》2010,(4):33-36,41
飞控系统主作动器电子控制装置(P-ACE)是现代电传飞控系统的核心部件。飞控系统主作动器电子控制装置仿真器采用数字仿真模块扩展模拟电路接口的仿真技术,具有与真件功能相似、接口相同的特性,可以代替飞控系统主作动器电子控制装置真件,参与飞控系统的调试和试验,对研究飞控系统的功能和性能具有重要意义。 相似文献
13.
14.
15.
In this paper, we consider the concept of the impact of an action or human error. We begin from an informal definition of impact as: the effect that an action or sequence of actions has on the safe and successful operation of a system; and develop a quantitative measure of the impact of specified behaviours. It is important that human-machine interface designers should understand the relationship between operator actions and the hazards associated with a system. We demonstrate how impact can be assessed prior to, or in parallel with, the design of the human-machine interface, and show how impact assessments could be used to allow risk analysts to inform designers about the relationship between operator actions and system hazards. To illustrate our approach we present a simple case study, 相似文献
16.
Donald D. Clayton 《Space Science Reviews》1979,24(2):147-226
This review concentrates on recent ideas involving a relationship between the early solar system and supernova explosions. It summarizes briefly the data that has helped inspire those ideas. Because the true relationship is still unknown and generates controversy, the distinct ideas are introduced singly in the historical context of their origins, and the active sense of surprise and controversy is visible. Quotations from pivotal papers are used as part of the exposition. The subject involves equally the isotopic anomalies detected in meteorites and the dynamic events of galactic evolution, nucleosynthesis, and protosolar collapse. Whatever the correct situation is, new connections have been found between the origin of the elements and the formation of the solar system. The objective of this review is to enable interested space scientists to quickly identify the competing points of view and the experiments and theories that have led to them. 相似文献
17.
Now extinct short-lived radioactive isotopes were apparently extant in the early solar system. Their abundances can be inferred
from isotopic effects in their daughter nuclei in primitive meteorites, and the deviation of these abundances from expectations
from continuous galactic nucleosynthesis yields important information on the last nucleosynthetic events that contributed
new nuclei to the solar system and on the general circumstances of the Sun's birth. In this paper we present a rudimentary
model that attempts to reconcile the abundances of ten short-lived radioactivities in the early solar system. In broad outlines,
the picture requires 1) that Type Ia supernovae maintained a steady ISM supply of 53Mn and 146Sm, 2) that the r-process events that slowly admixed new 107Pd, 129I, 182Hf, and 244Pu nuclei to the solar system occurred over an interval of several hundred million years prior to solar system formation,
and 3) that a massive star, by injecting only material outside its helium-exhausted core into the proto-solar nebula, contributed
26Al, 36Cl, 41Ca, 60Fe, and 182Hf no more than one million years prior to the Sun's birth. In this picture, the live 182Hf present in the early solar system was not due to r-process production but rather to a fast s-process in helium or carbon
burning shell in the massive star. We conclude with a possible chemical-memory explanation for the putative 53Cr/52Cr gradient in the solar system.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
18.
K. B. Panfilovich 《Russian Aeronautics (Iz VUZ)》2014,57(1):71-74
In this paper, a physical model of gas flows through the channels is refined. The influence of gas absorbed by the walls of a channel on its conductance is shown. The experimentally obtained minimum on the channel conductance-pressure dependence (as the Knudsen paradox) is interpreted. 相似文献
19.
This paper summarizes some of the discussions of working group 8–9 during the ISSI Conference on The Heliosphere in the Local Interstellar Medium. Because the subject of these working groups has become significantly broader during the last ten years, we have selected three topics for which recent observations have modified and improved our knowledge of the heliosphere and the surrounding interstellar medium. These topics are the number densities and ISM ionization states of hydrogen and helium, the newly discovered hot gas from the H wall seen in absorption, and the comparison between ISM and heliospheric minor element abundances. Papers from this volume in which more details on these topics can be found are quoted throughout the report. 相似文献