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Field Application of Global Positioning System01:28

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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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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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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Enhanced Pure Pursuit Path Tracking Algorithm for Mobile Robots Optimized by NSGA-II with High-Precision GNSS

Xiongwen Jiang1, Taiga Kuroiwa1, Yu Cao2

  • 1Division of Electronics and Informatics, Gunma University, Kiryu 376-0052, Japan.

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Summary
This summary is machine-generated.

This study introduces an improved pure pursuit algorithm for mobile robot navigation, enhancing path tracking accuracy. The optimized algorithm significantly reduces pose errors, improving overall navigation performance in real-world conditions.

Keywords:
GNSSlocalizationnavigationpath tracking

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Area of Science:

  • Robotics
  • Automation and Intelligent Systems
  • Navigation and Control

Background:

  • Accurate navigation is crucial for mobile robots in automated systems.
  • Existing path tracking algorithms may not fully account for dynamic robot characteristics.
  • High-precision Global Navigation Satellite System (GNSS) is vital for precise robot positioning.

Purpose of the Study:

  • To propose an enhanced pure pursuit path tracking algorithm for mobile robots.
  • To optimize the algorithm using the NSGA-II (Nondominated Sorting Genetic Algorithm II) for improved performance.
  • To enhance path tracking accuracy by considering robot dynamics and real-world operating conditions.

Main Methods:

  • Development of an enhanced pure pursuit algorithm.
  • Optimization of the algorithm using NSGA-II.
  • Integration with high-precision GNSS for accurate localization.
  • Experimental validation under varying operational parameters.

Main Results:

  • The enhanced algorithm significantly reduces Average Absolute Pose Error (APE).
  • A reduction of 14.63% in APE was observed with a look-ahead distance of 0.5 and velocity of 3.
  • A further reduction of 55.94% in APE was achieved at a velocity of 4.
  • Demonstrated substantial improvement in path deviation reduction and navigation performance.

Conclusions:

  • The proposed enhanced pure pursuit algorithm effectively improves mobile robot path tracking accuracy.
  • The NSGA-II optimization and consideration of dynamic characteristics lead to superior navigation performance.
  • This algorithm offers a robust solution for precise mobile robot navigation in complex environments.