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Errors in Global Positioning System01:26

Errors in Global Positioning System

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Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
38
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

26
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
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Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

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GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
51
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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Introduction to Global Positioning System01:30

Introduction to Global Positioning System

47
The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense  for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
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相关实验视频

Updated: Jun 11, 2025

Author Spotlight: Demonstrating Systematic Endobronchial Ultrasound to New Endoscopists
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使用BO-LightGBM方法对基于GNSS的列车定位进行伪造攻击识别.

Jiaqi Bi1, Jiang Liu1,2, Baigen Cai1

  • 1School of Automation and Intelligence, Beijing Jiaotong University, Beijing, China.

Science progress
|October 1, 2024
PubMed
概括
此摘要是机器生成的。

本研究引入了一种用于检测全球导航卫星系统 (GNSS) 在火车定位系统 (TPS) 中的伪造攻击的新方法. 开发的贝叶斯优化-LightGBM模型有效地识别了伪造,提高了火车的安全性和运营完整性.

关键词:
铁路 铁路 铁路 铁路 铁路 铁路机器学习是机器学习.识别模型的识别模型.伪造攻击攻击的攻击.列车定位系统列车定位系统

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相关实验视频

Last Updated: Jun 11, 2025

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科学领域:

  • *专注于网络安全和强大的定位系统,用于智能运输.
  • * 集成机器学习,用于关键基础设施的实时威胁检测.

背景情况:

  • *可靠的列车定位对于操作控制至关重要,全球导航卫星系统 (GNSS) 是一个关键技术.
  • *GNSS伪造攻击对火车定位系统 (TPS) 的可靠性构成重大威胁.
  • *现有的研究往往忽视了GNSS支持的TPS中伪造攻击的影响和识别.

研究的目的:

  • * 开发一种有效的伪造识别解决方案,用于列车定位系统中的主动安全保护.
  • *通过考虑GNSS伪造攻击的影响和识别来弥补当前研究的差距.
  • * 提高基于GNSS的列车定位的可靠性.

主要方法:

  • *设计了新的功能,包括GNSS观测指标和公里计启用参数,以反映伪造效应.
  • * 提出了一个贝叶斯优化-光梯度增强机器 (BO-LightGBM) 用于伪造识别.
  • *使用专门的GNSS伪造测试平台和SimSAFE工具在各种攻击模式中收集数据.

主要成果:

  • *BO-LightGBM模型在识别GNSS伪造攻击方面表现出卓越的性能.
  • * 拟议的解决方案显示了适应不同伪造攻击场景的适应性.
  • *比较分析证实了该模型对现有的最先进战略的优势.

结论:

  • *开发的BO-LightGBM方法为检测TPS中的GNSS伪造提供了一种有效的手段.
  • * 该方法为列车导航中的主动安全保护提供了强大的解决方案.
  • * 这项研究有助于提高依赖GNSS的运输系统的可靠性和安全性.