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相关概念视频

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

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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...
54
Introduction to Global Positioning System01:30

Introduction to Global Positioning System

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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,...
55
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

42
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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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,...
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Coordinates and Map Projections01:29

Coordinates and Map Projections

37
Coordinates and map projections are essential tools in accurately representing the Earth's surface for various applications, ranging from navigation to spatial analysis. The latitude and longitude coordinate system is a universally recognized framework for defining locations. Latitude specifies the distance of a point north or south of the equator, measured in degrees from 0° at the equator to 90° at the poles. Longitude indicates a location's position east or west of the prime meridian,...
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Updated: Jun 22, 2025

Author Spotlight: UAV Remote Sensing for Efficient Invasive Plant Biomass Estimation
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使用无人机图像和卫星图像的交叉视图地理定位算法.

Jiqi Fan1, Enhui Zheng1, Yufei He1

  • 1School of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, China.

Sensors (Basel, Switzerland)
|June 27, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的单流金字塔变压器 (SSPT) 网络,用于无人机 (UAV) 交叉视图地理位置. SSPT模型显著提高了定位准确性,并在各种环境条件下表现出强大的性能.

关键词:
无人机无人机无人机是什么?地理定位 - 地理定位卫星卫星卫星卫星卫星卫星卫星卫星卫星.风格转移 风格转移 风格转移变压器的变压器是一个变压器.

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科学领域:

  • 计算机视觉 计算机视觉
  • 机器学习 机器学习
  • 遥感 遥感 遥感 遥感

背景情况:

  • 无人机 (UAV) 的交叉视图地理定位面临着由于不同图像来源和场景相似性而面临的挑战.
  • 现有的方法难以应对干扰,需要强大的解决方案,以在卫星图像中准确定位无人机.

研究的目的:

  • 开发一个先进的深度学习模型,以提高无人机交叉视图地理位置的准确性和稳定性.
  • 通过利用注意力机制和专门的后处理技术来解决当前方法的局限性.

主要方法:

  • 设计了一个单流金字塔变压器 (SSPT) 网络,包含自我注意和交叉注意机制.
  • 实现了用于升级样本的标题模块和高斯权重窗口,以改善模型的融合.
  • 利用风格转移技术来模拟环境变化以进行数据增强.

主要成果:

  • 在UL14数据集上,SSPT-384模型获得了84.40%的相对距离得分 (RDS),这是一个显著的改进.
  • 在3米,5米和20米的仪表水平精度 (MA) 提高了12%,12%和10%,分别与SSPT-384.4.
  • SSPT-256型号也显示了性能增长,在各种值中改进了RDS和MA.
  • 在包括热红外,夜间和雨天条件在内的扩展数据集上表现出强大的稳定性.

结论:

  • 拟议的SSPT网络通过减轻干扰和改进特征相互作用,有效地提高无人机交叉视图地理位置的准确性.
  • 该方法表现出极好的环境适应性和稳定性,使其适合于现实世界的应用.
  • 结果验证了基于注意力的变压器架构和专门用于此任务的后处理的有效性.