导航台

• An emergency radio beacon helped rescue three climbers on mount hood and a big dog kept them warm . the group endured a foul and a cold night before being found
  一个无线电导航台帮助救援了三名被困于胡德山的登山者。他们被发现之前，依靠一只看门狗取暖，熬过了一个恶劣而又寒冷的夜晚。
• In this paper , the gdop ( geometric dilution of precision ) expression of area navigation system is deduced . using the matrix theory the lowest gdop and that gdop is smaller with more navigation stations are proved in theory
  本论文推导了区域导航定位系统的几何精度因子,并用矩阵理论对其最小值及其随导航台个数增加而减小进行了证明。
• In the paper , the prototype of the navigation platform of the internet - based manufacturing is introduced , and its main parts are studied , such as the design and implement of the key data base and the products and parts classification system
  本文介绍了作者研制的基于网络制造的导航台原型，并对其主要部分进行了研究和探讨，如核心数据库与产品和零部件关键词分类系统的设计和实施方法。
• Through the comparative analysis of the domestic and foreign reason , we find that the difference of technological environment and economic environment is basic reason of disparity in the two countries ’ website marketing result . secondly in the use of the marketing tactics , website ' s brand construction , individualization , discount , and the good after - sale service are the immediate causes leading the disparity in website ' s flow and website popularizes
  通过内外部原因的比较分析我们发现,技术环境和经济环境上的差异是两国旅游网站营销效果差距的根本原因;其次在营销策略的使用上,网站品牌建设、个性化定制服务、折扣和优惠、良好的售后服务以及与大导航台的独家合作是美国旅游网站在网站流量、网站推广上领先我国的直接原因。
• Spread spectrum code emitted by navigation station has correlative operation with the signal produced by receiver , through measuring the place of maximal correlative function , we can measure the spreading time of the navigation station ’ s signal , so we can measure the distance between navigation station and receiver
  区域导航利用导航台发射的扩频码与接收机产生的本地信号进行相关运算,通过测量相关函数最大值的位置,来测定导航台信号传播时间,从而测定导航台到接收机的距离。
• However , at present in china civil aviation industry , the flight procedure design for terminal airspace is still in its early stage , with existing problems , such as too many navigational aids , inefficient use of navigational aid frequency , and low adaptability of flight procedure
  针对我国目前机场空域飞行程序设计还处在推广阶段这一情况，存在着诸如导航设施过多、导航台频率浪费严重、飞行程序适应性较差等缺陷，研究基于同一vor / dme导航设施机场空域飞行程序设计，具有较强的现实意义。
• Thirdly , this thesis compares these two different natures of flight procedures to further extend , and the possibility of rnav fp based on the principles of vor / dme ifp is studied . in the end , as a case study , these two flight procedures are set up at guanghan terminal airspace , and the comparison is made between these two methods to illustrate the advantage and disadvantage of each method
  用这些方法可以有效地提供不同的机场飞行程序方案，能够达到机场空域内的飞行程序规划的目标要求，为以后飞行程序的优化提供有利的依据；同时，还可为vor / dme导航台的选址提供决策的依据。
• Such research can lead to a new flight procedure design methodology , which copes with these problems and makes strong economical senses . under the guidance of aviation safety , efficiency , regularity and economy , this thesis applies the principle of the instrument flight procedure , firstly , to research the current vor / dme instrument flight procedure , namely the vor / dme instrument flight procedure ( vor / dmf . ifp ) , its holding procedures , departure routes , arrival routes , and approach procedures , cor the terminal airspace
  本文在安全、效率、正常和经济的原则下，运用仪表飞行程序设计的思想和原则，首先对在vor / dme导航台上建立仪表进场航线、等待程序、仪表进近程序和仪表离场航线等机场空域内的飞行程序的设计方法进行了研究，总结出不同位置的vor / dme仪表飞行程序的布局形式、适用情况及其优缺点，并首次提出了以vor / dme为基准的封闭圆弧进近程序；其次，研究了基于vor / dme导航台的区域导航飞行程序的设计方法；最后，研究了在现有的vor / dme仪表飞行程序上建立区域导航飞行程序的设计方法。