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相关概念视频

Field Application of Global Positioning System01:28

Field Application of Global Positioning System

339
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...
339
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

427
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...
427
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

393
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...
393
Local Attraction01:22

Local Attraction

434
Local attraction refers to disturbances in compass readings caused by magnetic influences from nearby objects such as metal fences, buried pipes, vehicles, buildings, power lines, or natural iron ore deposits. Small items like wristwatches, steel tools, or belt buckles can also interfere with the compass by creating local magnetic fields that distort the Earth's natural magnetic field. These distortions lead to inaccurate readings, posing navigation and land surveying challenges.Local...
434

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相关实验视频

Updated: Feb 28, 2026

Design and Analysis for Fall Detection System Simplification
08:05

Design and Analysis for Fall Detection System Simplification

Published on: April 6, 2020

11.2K

在不利条件下,具有适应性传感器融合的上下文感知语义定位.

Jun-Hyeon Choi1, Dong-Su Seo1, Ye-Chan An1

  • 1Department of Electrical and Computer Engineering, College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.

Sensors (Basel, Switzerland)
|February 27, 2026
PubMed
概括
此摘要是机器生成的。

这项研究引入了自动驾驶汽车的语义本地化,提高了准确性和可靠性. 通过整合语义推理,它大大减少了本地化错误,特别是在传感器问题时.

关键词:
具有上下文意识的人.在本体论上,本体论是存在的.语义本地化 语义本地化语义地图是一个语义地图.融合传感器 融合传感器 融合传感器

相关实验视频

Last Updated: Feb 28, 2026

Design and Analysis for Fall Detection System Simplification
08:05

Design and Analysis for Fall Detection System Simplification

Published on: April 6, 2020

11.2K

科学领域:

  • 机器人技术 机器人技术 机器人技术
  • 人工智能的人工智能
  • 计算机视觉 计算机视觉

背景情况:

  • 自动驾驶需要在具有挑战性的现实环境下强大的车辆定位.
  • 传统方法与传感器退化和模两可的数据作斗争,导致不准确的姿势估计.

研究的目的:

  • 开发一个语义本地化框架,整合基于本体学的推理,以提高准确性和可靠性.
  • 在降低传感器条件下解决基于几何的定位局限性的问题.

主要方法:

  • 改造本地化作为一个上下文意识的约束选择问题.
  • 集成的语义推理来评估构成假设的逻辑和上下文有效性.
  • 采用基于本体学的对物体,地点和车辆姿势的语义一致性检查.

主要成果:

  • 实现了平均35.6%的平均局部化误差和47.0%的最大局部化误差的平均减少.
  • 证明了改进的稳定性和准确性,特别是在传感器退化和动态环境下.
  • 通过选择语义相关信息,启用结构化的多传感器融合.

结论:

  • 语义本地化显著提高了自动驾驶汽车定位的准确性和可靠性.
  • 该框架减少了计算复杂性,并且可以适应合作感知系统.
  • 基于本体学的语义推理对于下一代自动驾驶本地化至关重要.