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Field Application of Global Positioning System01:28

Field Application of Global Positioning System

323
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...
323
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

348
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...
348
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

465
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
465
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

382
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...
382
Introduction to Global Positioning System01:30

Introduction to Global Positioning System

471
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,...
471
Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

389
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
389

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相关实验视频

Updated: Jan 17, 2026

Measurement of Extracellular Ion Fluxes Using the Ion-selective Self-referencing Microelectrode Technique
09:18

Measurement of Extracellular Ion Fluxes Using the Ion-selective Self-referencing Microelectrode Technique

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开发基于移动机器人的精确3D位置测量系统.

Pilgong Choi1, Jeng-O Kim1, Myeongjun Kim1,2

  • 1Department of Laser & Electron Beam Technologies, Advanced Manufacturing Systems Research Division, Korea Institute of Machinery & Materials, Deajeon 34103, Republic of Korea.

Sensors (Basel, Switzerland)
|September 19, 2025
PubMed
概括

这项研究引入了一种用于放置船泊块的自动化系统,大大提高了干码头维修的安全性和效率. 创新的机器人解决方案减少了设置时间,并提高了海军船舶维护的精度.

关键词:
3D激光追踪器是什么?3D点云是一个3D点云.测量的准确性 测量的准确性干式码头 - 干式码头是一个干式码头.

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Production of a Strain-Measuring Device with an Improved 3D Printer
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相关实验视频

Last Updated: Jan 17, 2026

Measurement of Extracellular Ion Fluxes Using the Ion-selective Self-referencing Microelectrode Technique
09:18

Measurement of Extracellular Ion Fluxes Using the Ion-selective Self-referencing Microelectrode Technique

Published on: May 3, 2015

14.4K
Production of a Strain-Measuring Device with an Improved 3D Printer
06:17

Production of a Strain-Measuring Device with an Improved 3D Printer

Published on: January 30, 2020

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Picometer-Precision Atomic Position Tracking through Electron Microscopy

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科学领域:

  • 机器人和自动化 机器人和自动化
  • 海洋工程 海洋工程
  • 计算机视觉 计算机视觉

背景情况:

  • 传统的手动对接块放置是耗时且危险的.
  • 现有的大型船舶和海军舰艇维修方法缺乏效率和安全性.
  • 手动操作涉及重材料,对工人构成重大风险.

研究的目的:

  • 开发用于船舶维修的自动对接块放置系统.
  • 为了提高安全性,减少设置时间,提高干码头运营的效率.
  • 提供精确可靠的解决方案,用于重新安置对接块.

主要方法:

  • 整合了一个无人起重机,一个6DOF机器人平台和一个具有3D精确定位的移动机器人.
  • 使用3D激光追踪器,LiDAR和RTK-GPS进行毫米级的位置反.
  • 开发了一个具有算法 (DBSCAN,KD-Tree,RANSAC) 的目标块,用于从3D点云数据中检测顶点.

主要成果:

  • 在8米的距离上,在0.5毫米范围内实现了位置测量误差.
  • 成功自动化了对接块的搬迁.
  • 显著减少了设置时间,提高了工人安全.

结论:

  • 自动化对接块放置系统为手工方法提供了更安全,更有效的替代方案.
  • 该系统提高了干码头维护操作的整体容量和效率.
  • 这项技术代表了海军船舶维修和维护的重大进步.