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相关概念视频

Field Application of Global Positioning System01:28

Field Application of Global Positioning System

283
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...
283
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...
307
Errors in Global Positioning System01:26

Errors in Global Positioning System

304
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,...
304
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

357
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...
357
Introduction to Global Positioning System01:30

Introduction to Global Positioning System

424
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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Wind Turbine Machine Models01:24

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In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
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基于OCC的定位方法用于在GNSS拒绝的环境中自主无人机导航:海上风电场模拟研究

Ju-Hyun Kim1, Sung-Yoon Jung1

  • 1Department of Electronic Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.

Sensors (Basel, Switzerland)
|December 31, 2025
PubMed
概括

本研究介绍了一种光学摄像头通信 (OCC) 定位方法,用于在GPS拒绝区域的无人机 (UAV). 该系统使用LED灯进行精确的实时3D定位,提供强大的导航替代方案.

关键词:
没有GNSS的环境.无人机局部化的UAV定位.这就是YOLOv8的意义.海上风力轮机的海上风力轮机光学摄像机通信 (OCC) 是指光学摄像机通信.视角-n-点 (PnP) 的一个例子.无人驾驶飞行器 (UAV) 是一种无人驾驶飞行器.车辆定位装置 车辆定位装置车辆到基础设施 (V2I)

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科学领域:

  • 机器人技术和自主系统
  • 光学无线通信的无线通信.
  • 导航和定位系统 导航和定位系统

背景情况:

  • 无人机的准确导航至关重要,特别是在缺乏可靠的全球导航卫星系统 (GNSS) 信号的环境中.
  • 现有的本地化方法通常依赖于卫星或射频 (RF) 基础设施,在某些操作环境中可能无法使用或不可靠.

研究的目的:

  • 开发和评估基于光学摄像机通信 (OCC) 的定位方法,用于无人机的实时3D坐标估计.
  • 使用可见光通信演示GNSS独立的本地化解决方案.

主要方法:

  • 使用航空阻塞发光二极管 (LED) 作为光学发射器,发射颜色转换键调制信号.
  • 使用无人机上的摄像头作为接收器来捕获和解码LED信号.
  • 集成解码位置标识符与几何约束通过透视-n-Point算法用于3D位置估计.

主要成果:

  • 在模拟的海上风电场环境中,在5万厘米的飞行路径上实现了亚米定位精度.
  • 验证了基于OCC的定位方法的可行性和准确性,用于实时无人机导航.
  • 证明了系统在没有GNSS或射频基础设施的情况下有效运行的能力.

结论:

  • 基于OCC的定位为无人机在GNSS拒绝或复杂环境中的导航提供了具有成本效益和强大的替代方案.
  • 该方法显示了工业应用的巨大潜力,例如海上风电场检查和维护.
  • 光学无线通信的整合为增强自主无人机系统提供了一个有希望的途径.