搜索结果: 1-15 共查到“Galileo”相关记录48条 . 查询时间(0.126 秒)
四大GNSS导航卫星系统发播三频及以上观测数据成为必然趋势。本文基于IGS钟差基准研究了三频非组合（UC）精密定轨模型及其模糊度固定方法。将载波相位硬件延迟分成时变和时不变参数，并进行参数重组，得到三频非组合定轨观测模型；类似精密定位中的超宽巷、宽巷、窄巷的分步模糊度固定策略，使用双差法推导了三频非组合模糊度固定方法。以发射三频信号的GPS ⅡF、BDS-2、Galileo卫星为例，进行1/2频点...
GPS/BDS/Galileo三频精密单点定位模型及性能分析
GPS/BDS/Galileo 精密单点定位 GNSS偏差 三频观测值 定位性能
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2021/4/2
在精细考虑伪距和载波相位硬件偏差时变特性的基础上，导出了更为严谨的非差非组合观测方程，并给出了非组合模式下两类GNSS偏差的数学表达形式。基于此，本文详细研究了3种常用的三频精密单点定位（PPP），即无电离层两两组合IF1213、单个无电离层组合IF123与非组合UC123函数模型的独立参数化方法，系统分析了3种PPP模型的相互关系以及GPS/BDS/Galileo三频静、动态PPP定位性能。结果...
中国科学院国家授时中心监测到伽利略卫星导航系统（Galileo）时间异常（图）
中国科学院国家授时中心 伽利略 卫星导航系统 Galileo 时间异常
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2020/12/29
2020年12月14日，中国科学院国家授时中心系统时间性能监测评估组监测到伽利略卫星导航系统（以下简称Galileo系统）时间发生异常，异常持续时间3小时左右。该小组监测发现，Galileo系统时间从UTC时间2020年12月14日0 时起（北京时间上午8点），部分卫星播发的时间信息存在无规律的跳变，导致监测到的系统时间出现异常。以UTC(NTSC)为参考，获得的Galileo系统时间（GST）相...
2017年EGU“环境地震学”伽利略会议（EGU Galileo conference：From process to signal–advancing environmental seismology）
2017年 EGU 环境地震学 伽利略 会议
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2017/1/20
The application of seismic techniques to the study of Earth surface processes is a rapidly growing field. However, the field is relatively new and inherently multidisciplinary. As a consequence, no pl...
SENSORS FOR LOCATION-BASED AUGMENTED REALITY THE EXAMPLE OF GALILEO AND EGNOS
Augmented Reality Sensors Galileo Photogrammetry
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2016/7/5
Augmented Reality has long been approached from the point of view of Computer Vision and Image Analysis only. However, much more sensors can be used, in particular for location-based Augmented Reality...
LBS AUGMENTED REALITY ASSISTIVE SYSTEM FOR UTILITIES INFRASTRUCTURE MANAGEMENT THROUGH GALILEO AND EGNOS
LBS 3D GIS augmented reality utilities Galileo photogrammetry pose estimation
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2016/7/5
There is a continuous and increasing demand for solutions, both software and hardware-based, that are able to productively handle underground utilities geospatial data. Innovative approaches that are ...
Galileo's Refutation of the Speed-Distance Law of Fall Rehabilitated
acceleration freefall foundations of physics Galileo history of physics
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2016/5/30
Galileo's refutation of the speed-distance law of fall in his Two New Sciences is routinely dismissed as a moment of confused argumentation. We urge that Galileo's argument correctly identified why th...
The Scaling of Speeds and Distances in Galileo’s Two New Sciences:A reply to Palmerino and Laird
Galileo history physics freefall
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2016/5/30
In this reply, we respond to the comments of Palmerino and Laird on our article, "Galileo's Refutation of the Speed Distance Law of Fall Rehabilitated," published in the same issue of Centaurus.
Framing the rules of perception:Hochberg vs.Galileo,Gestalts,Garner,and Gibson
perception Hochberg Gestalts Garner Gibson
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2015/8/13
Framing the rules of perception:Hochberg vs.Galileo,Gestalts,Garner,and Gibson.
Code Generation Scheme and Property Analysis of Broadcast Galileo L1 and E6 Signals
Code Generation Scheme Broadcast Galileo L1 E6 Signals
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2015/6/25
In this paper, we decode the PRN codes of the L1 and E6 signals broadcast by the Galileo GIOVE-A test satellite.We apply the 45.7 m Stanford SRI Dish and the 1.8m dish of the Stanford GNSS Monitor Sys...
Further Development of Galileo-GPS RAIM for Vertical Guidance
Further Development Galileo-GPS RAIM Vertical Guidance
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2015/6/25
With the much anticipated deployment of Galileo, a new partner will rise on the sky of Global Navigation Satellite Systems (GNSS). Equally anticipated is the launch of the modernized block III GPS sat...
Galileo-GPS RAIM for Vertical Guidance
Galileo-GPS RAIM Vertical Guidance
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2015/6/25
In the next ten years the number of pseudorange sources and their quality is expected to increase dramatically:The United States is going to add two new civil frequencies (L5 and L2C) in the modernize...
Galileo GIOVE-A Broadcast E5 Codes and their Application to Acquisition and Tracking
Galileo GIOVE-A Broadcast E5 Codes Application Acquisition Tracking
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2015/6/25
In this paper, we decode the PRN codes of the E5a and E5b signals broadcast by the Galileo GIOVE-A test satellite. The Galileo E5 band overlaps with Distance Measuring Equipment (DME) and Tactical Air...
Multiple Hypothesis RAIM with Real-Time FDE and Forecasted Availability for Combined Galileo-GPS Vertical Guidance
Multiple Hypothesis RAIM Real-Time FDE Forecasted Availability Galileo-GPS Vertical Guidance
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2015/6/25
The number of ranging sources for the aviation user is expected to increase with the Galileo system becoming fully operational over the next decade, and the projected launch of a modernized GPS III co...
Fault Detection and Elimination for Galileo-GPS Vertical Guidance
Fault Detection Elimination Galileo-GPS Vertical Guidance
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2015/6/25
In anticipation of the future launches of dual-frequency GNSS satellites, such as Galileo and GPS block III, a series of new developments has taken place in the field of Receiver Autonomous Integrity ...