导航系统

Usually, there are three available accesses for location underwater, inertial navigation, dead reckoning navigation, acoustic tracking location.

从目前来看，应用于水下导航的方法主要有：惯性导航、船位推算导航、水声定位系统等方法。

One design scheme of software and hardware on the basis of deep analysis of vehicle airmanship and data processing technology theory is proposed which is based on the embedded system. What's more, the detail whole structure software design of some parts of the data processing system is also described.

论文在深入分析研究车载导航技术和数据处理技术理论的基础上提出了一种基于嵌入式系统的车载导航终端系统的软硬件设计方案，并给出了数据处理系统部分详细的软件总体结构设计。

However, keywords can only represent the simple content, which easily dissever the relevancy of the content The deep-content representation and application are not developed, so semantic navigation is not satisfied at present. Time mechanism is a kind of navigation mechanisms that uses time for the signpost, and determines navigation route according to the time of occurrence.

时序机制指以时间为导航路标、根据事物发生的时间顺序确定访问路径的一种导航机制，主要应用于WWW信息空间中以时问顺序为线索组织信息的结构中；空间机制指依据对象间的空间关联，为用户指引路径，提供导航路标的机制，应用于具有空间特征的结构中；社会机制指利用先行者的经验、建议为后来者指引路径的行为，原来主要应用在推荐系统、协作系统中，目前已经在主流的信息检索系统中得到了应用，如在CNKl知识网络服务平台（CNS 5.0）中的应用。

In order to investigate and develop advanced flight simulator with high fidelity and provide the simulator with actual and reliable navigation data, the data structure requirements of navigation database for the system of flight simulator prototype are presented. These requirements including the airport, runway, very high frequency omnidirectional radio range, instrument landing system, distance measuring equipment system, nondirectional beacon and marker beacon.

为了研究开发高逼真度的飞行模拟器，并为之提供真实可靠的导航数据，提出了飞行模拟器原型系统导航数据库的数据结构要求，即机场、跑道、甚高频全向信标、仪表着陆系统、测距仪系统、中波导航台和指点信标的数据结构要求。

According to three compared experiments, which are using simple tactile guide, with visual guide and with tactile board, we conclude that the simulated phosphene positioning system with tactile board is accurate (the mean error is less than 10mm) and reproducible (the standard deviation is less than 6mm) in evaluating simulated phosphene.

如此循环往复，在经过简单触觉导航、加入视觉导航和具有触摸板导航的三个对照性实验后，我们得出具有触摸板导航的模拟光幻视定位系统能够精确(平均误差小于10mm)且稳定(标准差小于6mm)的对模拟光幻视点进行定位。

GPS has been widely adapted as the main positioning tool nowadays after development for more than 20 years with a new generation updating. The applications of areas and prospects dimension of GPS have exceeded its original purpose. It has become a very important technical method and solution way in almost every field of transportation, communication, metrology, aerologic and so on.

全球定位系统GPS作为新一代的卫星导航定位系统，经过二十多年的发展，已发展成为一种被广泛采用的系统，它的应用领域和应用前景已远远超出了该系统设计者当初的设想，目前，它在航空、航天、军事、交通、运输、源勘探、通信、气象等几乎所有的领域中，都被作为一项非常重要的技术手段和方法，用来进行导航、定时、定位、地球物理参数测定和大气物理参数测定等。

Lobal Positioning System,a satellite-based navigation system,has a variety of applications on land,at sea and in the air.GPS works in any weather conditions,anywhere in the world,24 hours a day.

PS系统1.1什么是GPSGPS即全球定位系统是70年代由美国陆、海、空三军联合研制的，具有在海、陆、空进行全方位实时三维导航与定位能力的新一代卫星导航与定位系统。

Also, it adapts to the prevailing trend of web service, which is drawing map by SVG.The techniques and theories involved in navigating map system based on smart phone are not yet mature, but because of the particular advantage when exploiting mobile information service and because of the commercial chance and huge market, the future of navigating map system based on smart phone is luciferous. So, I must to say it is very important to do some research work to the navigating map system based on smart phone.

由于面向智能手机的导航地图系统所涉及的技术和理论还不够成熟和完善，而面向智能手机的导航地图系统在开发移动信息服务方面有着自身独特的优势，并在人们生活中有着潜在的巨大市场和商机，因此在技术和理论的不断发展和完善中，面向智能手机的导航地图系统有着广泛的应用前景，对其研究有着极其重要的作用。

The integrated system is composed of SINS and GPS, each subsystems navigational parameter is sent to navigation computer. At there the azimuth and attitude angle error is estimated by Kalman filter, then be used to adjust the attitude matrix of SINS.

组合系统由SINS、GPS两个系统构成，各子系统的导航信息输出至导航计算机，应用卡尔曼滤波方法估计三个方向的失准角，并对SINS系统的姿态矩阵进行校正。

The Global Positioning System is a Global Navigation Satellite System developed by the United States Department of Defense.

全球定位系统是一个全球导航卫星系统发达的美国国防部这是唯一的全功能的全球导航卫星系统在世界上。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。