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卫星导航系统
相关语句
  satellite navigation system
    Positioning Method by Two Geostationary Satellites and Beidou 1 Satellite Navigation System
    双星定位法与北斗1号卫星导航系统
短句来源
    Practice and Integrety of Satellite Navigation System
    卫星导航系统集成与实践初论
短句来源
    The Principle of Beidou 1 Satellite navigation system based on the positioning method by two geostationary satellites is introduced briefly.
    简要介绍了基于双星定位法的北斗 1号卫星导航系统的原理。
短句来源
    The modulation of Galileo Satellite Navigation System's signal is analyzed in this paper,especially,the basic principle of the BOC and ALTBOC is analyzed in detail.
    总结了伽利略卫星导航系统各信号的信号调制方式、各频段的信号调制体制,特别是BOC调制及ALTBOC调制技术的基本原理。
短句来源
    Research of Constellation of Regional Satellite Navigation System Covering China Area
    中国区域卫星导航系统星座的方案探讨
短句来源
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  satellite positioning system
    ASTRONOMY APPLICATION OF THE SATELLITE POSITIONING SYSTEM
    卫星导航系统中的天文学
短句来源
  navigation satellite system
    ADVANCE OF GLOBAL NAVIGATION SATELLITE SYSTEM
    全球卫星导航系统的进展
短句来源
    Market Forecast and Benefit Analysis of Application of Beidou Navigation Satellite System in China
    我国北斗卫星导航系统应用需求及效益分析
短句来源
    The navigation satellite system, which provides high precision position, velocity and times all weather and all time, plays an important role in military and civil use. The NO.
    卫星导航系统以其全天候全天时提供高精度的位置、速度和时间信息.在军事和民用上显示出越来越重要的用途。
短句来源
    Therefore to establish a new generation navigation satellite system is development goal of our space technology in the near future.
    我国已把建立二代卫星导航系统作为我国航天科技的近期发展目标。
短句来源
    Global position system (GPS) is a navigation satellite system which can position exactly. It attracts the attention from it appeared. But the policy of SA and the influences of the ionosphere, the troposphere, the error of ephemeris and the clock on satellites and so on, these factors depress the civil receiver's precision of position.
    GPS(Global Positioning System)是一种高精度卫星导航系统,它自诞生以来就受到人们广泛的关注,但由于SA(Software Applying)政策人为增加了误差,以及电离层、对流层、星历误差、卫星时钟误差等因素的影响,致使提供给民用接收机的定位精度较低(约在100m左右)。
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  “卫星导航系统”译为未确定词的双语例句
    Navigation Message of GLONASS
    GLONASS卫星导航系统的导航电文
短句来源
    Satellite Constellation of Local Navigation System
    区域卫星导航系统的卫星星座
短句来源
    GridGNSS-a new conception of GNSS based on grid technology
    GridGNSS——网格化全球卫星导航系统
短句来源
    Study on Algorithm and Application of Rapid GPS Precision Positioning
    卫星导航系统快速精密定位算法和应用
短句来源
    The GP2021 is a 12 channels C/A code baseband correlator produced by Zarlink Semiconductor.
    GP2021是Zarlink半导体公司生产的12通道C/A码基带相关器,该芯片与大多数16位和32位微处理器兼容,可用于GPS卫星导航系统的接收机。
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  satellite navigation system
On the sensitivity factor of a satellite navigation system
      
Galileo is the name of a future worldwide satellite navigation system that could be developed soon by Europe.
      
Because of the need to acquire data in all environments, there are potential limitations in using a global satellite navigation system such as GPS to determine the spatial and temporal data in built-up areas.
      
Electronic resources on European satellite navigation system Galileo
      
The first results of retrieval of the refractive index profile using the "Transit" satellite navigation system are presented.
      
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  satellite positioning system
An American Military Satellite positioning system intended originally for missile etc.
      
Most well know and widely used satellite positioning system is GPS, operated by US Ministry of Defense.
      
The same trends are likely to be seen in mass produced satellite positioning system equipment like on-board units.
      
  navigation satellite system
Earth-reflected GNSS (Global Navigation Satellite System) signals have become an attractive tool for remote sensing, e.g., ocean altimetry and scatterometric ocean wind measurements.
      
Unfortunately, urban canyons causing shadowing and multipath represent an adverse condition for Global Navigation Satellite System (GNSS) signal reception, thus leading to poor satellite visibility and low positioning accuracy.
      
This paper describes an Ajax (Asynchronous JavaScript and XML) GIS (geographic information system) application for the simulation of GNSS (Global Navigation Satellite System) availability in dense urban areas.
      
The WGS84 associated realization, called in this paper WGS84-D, is a 1 meter consistency NNSS (US Navy Navigation Satellite System) Doppler realized reference frame.
      
By the beginning of 1996 the Russian Global Navigation Satellite System (GLONASS) constellation was completely deployed, although several satellites have already been decommissioned since then.
      
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GDOP is the abbreviation of Geometric Dilution of Precision. It was originally used for showing position accuracy of Hyperbolic navigation systems and now is not only used on evaluation of various radio navigations, but also used on calculation of coverage and criterions of satellite selections for GPS, etc. The application of GDOP is steadily added. Therefore, more and more people place emphasis on GDOP, and it has become the new research domain of the fix error theory which the navigation specialists all over...

GDOP is the abbreviation of Geometric Dilution of Precision. It was originally used for showing position accuracy of Hyperbolic navigation systems and now is not only used on evaluation of various radio navigations, but also used on calculation of coverage and criterions of satellite selections for GPS, etc. The application of GDOP is steadily added. Therefore, more and more people place emphasis on GDOP, and it has become the new research domain of the fix error theory which the navigation specialists all over the world are interested in. In this paper, the authors probe into GDOP preliminarily and just want to cast a brick to attract jade, and also expect the experts in this field go into deep research.

GDOP是英文Geometric Dilution of Precision的缩写,它最初是作为衡量双曲线导航系统位置线几何定位精度优劣的一个参数而被航海界所利用,现在不仅用于对各种无线电导航系统进行评价,还用于计算正在发展中的GPS卫星导航系统的复盖区域及卫星配置方案的选择等方面,应用范围不断扩大。因此,日益引起人们的重视,已发展成为航海界所关注的定位误差理论的一个研究领域。本文对GDOP问题以及其在GPS系统和奥米加系统中的应用做了初步探讨,并提出一个改善中国近海罗兰导航系统定位精度的具体建议,仅以抛砖引玉期求我国的有关专家进一步展开深入研究。

Up to date,the remarkabl advances in a series of GPS/MET experimental programs to demonstrate potentiality and feasibility of GPS Sounding of atmospheric temperature profiles,precipitable water and wind have been acquired in different countries。It has been shown that active limb sounding of atmosphere using Global position system (GPS) radio signal received in low earth orbit is able to offer the data sets of temperature profiles with the precision of 1-2℃ between 5-45 km,and to calculate the water vapor pressure...

Up to date,the remarkabl advances in a series of GPS/MET experimental programs to demonstrate potentiality and feasibility of GPS Sounding of atmospheric temperature profiles,precipitable water and wind have been acquired in different countries。It has been shown that active limb sounding of atmosphere using Global position system (GPS) radio signal received in low earth orbit is able to offer the data sets of temperature profiles with the precision of 1-2℃ between 5-45 km,and to calculate the water vapor pressure from the measured refractivity if an temperature profile can be estimated independently。The measuring accuracy of atmospheric precipitable water (PW) from a GPS PW network with high precision is better than 1-2 mm,and the observation is relatively unaffected by rain,cloud and aerosol.The advanced GPS windfinding system has also been tested by a few of country,and when the radar windfinding was used as a reference the average deviation was about 0.5 m/s for GPS and 0.8 m/s for loran c。Finally,the prospects for the wide application of the GPS sounding of atmosphere to meteorological research and operations are given,in addition the strategy to develop the technology of GPS remote sensing in China and to promote international cooperation is also presented in this paper。

GPS(GlobalPositionSystem)是美国第二代卫星导航系统。它的出现带来了当今世界上军事、民用导航技术的全面革新,在许多科学研究领域得到了极为重要的应用。同样地,在气象科学研究和业务应用方面也展示了广阔的前景。地基和空基的GPS气象探测已被看成为支持21世纪WMO计划的一种新的全球综合高空观测系统。美国气象学会第78届年会有不少相关研究报告,集中反映了欧美GPS气象应用的开发研究最新进展,可概括为以下3方面:(1)由UCAR(UniversityCorporationforAtmosphericResearch)主持的GPS/气象学(GPS/MET)计划已经取得了成功。1995年4月3日发射了一颗低轨卫星(ML-1),利用低轨卫星对GPS卫星进行掩星观测,可以获得5~45km高度范围内高分辨率的温度廓线(误差1~2℃)以及在5km高度以下大气层的温度分布已知的条件下(精确到2℃),确定这一层中水汽压垂直分布。更具吸引力的应用是将大气折射率或射线偏转角这些基本物理量直接同化到高分辨率的全球或中尺度天气预报模式中去,以提高预报的准确性。只要发射8颗低轨卫星,总费用约1亿美元,便可以为天...

GPS(GlobalPositionSystem)是美国第二代卫星导航系统。它的出现带来了当今世界上军事、民用导航技术的全面革新,在许多科学研究领域得到了极为重要的应用。同样地,在气象科学研究和业务应用方面也展示了广阔的前景。地基和空基的GPS气象探测已被看成为支持21世纪WMO计划的一种新的全球综合高空观测系统。美国气象学会第78届年会有不少相关研究报告,集中反映了欧美GPS气象应用的开发研究最新进展,可概括为以下3方面:(1)由UCAR(UniversityCorporationforAtmosphericResearch)主持的GPS/气象学(GPS/MET)计划已经取得了成功。1995年4月3日发射了一颗低轨卫星(ML-1),利用低轨卫星对GPS卫星进行掩星观测,可以获得5~45km高度范围内高分辨率的温度廓线(误差1~2℃)以及在5km高度以下大气层的温度分布已知的条件下(精确到2℃),确定这一层中水汽压垂直分布。更具吸引力的应用是将大气折射率或射线偏转角这些基本物理量直接同化到高分辨率的全球或中尺度天气预报模式中去,以提高预报的准确性。只要发射8颗低轨卫星,总费用约1亿美元,便可以为天气业务预报?

In this paper, the structure of navigation message of GLONASS is introduced to reader. Parameters of ephemeris and almanac of GLONASS are described in detail, and the difference of navigation message between GLONASS and GPS are presented too.

介绍了GLONASS卫星导航系统的导航电文的用途、结构、内容、各参数的定义及意义 ,GLONASS导航电文与GPS导航电文的异同

 
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