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Related Concept Videos

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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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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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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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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...
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Newton’s first law is usually considered to be a statement about reference frames. It provides a method for identifying a special type of reference frame: the inertial reference frame. In principle, we can make the net force on a body zero. If its velocity relative to a given frame is constant, then that frame is said to be inertial. So, by definition, an inertial reference frame is a reference frame where Newton's first law holds valid. Newton's first law applies to objects with...
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New Global Referencing Approach in a Camera-LCD Micro Positioning System.

Óscar de Francisco Ortiz1, Irene Ortiz2, Antonio Bueno3

  • 1Department of Engineering and Applied Technologies, University Center of Defense, San Javier Air Force Base, MDE-UPCT, 30720 Santiago de la Ribera, Spain.

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|April 15, 2020
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Summary

A new camera-LCD positioning system uses an absolute reference algorithm for enhanced stability and micron-level accuracy in precision manufacturing. This computer vision approach ensures the system maintains its global position reference.

Keywords:
Precisionaccuracyartificial visionpattern recognitionpositioning

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Area of Science:

  • Precision Engineering
  • Computer Vision
  • Robotics

Background:

  • Positioning systems are critical for quality in precision manufacturing.
  • Current systems require improvements in accuracy and repeatability.
  • Existing camera-LCD systems need enhanced stability and a reliable global positioning reference.

Purpose of the Study:

  • To introduce an improved positioning system utilizing a camera-LCD setup.
  • To implement a novel algorithm with an absolute reference for enhanced stability.
  • To achieve micron-level accuracy in global position calculation for manufacturing processes.

Main Methods:

  • Development of a new algorithm based on basic geometry and linear algebra.
  • Application of computer vision techniques for image treatment on an LCD.
  • Determination of the spiral center using images captured at any point to establish an absolute reference.

Main Results:

  • The new algorithm successfully determines the spiral center, maintaining the system's reference.
  • Simulations and tests demonstrate significant improvements in reliability and stability.
  • The system achieves micron-level errors in global position calculation.

Conclusions:

  • The proposed algorithm significantly enhances the stability and reliability of camera-LCD positioning systems.
  • The absolute reference method ensures the system constantly knows its position, preventing reference loss.
  • This advancement offers substantial improvements for precision manufacturing applications requiring high accuracy.