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Related Concept Videos

Introduction to Global Positioning System01:30

Introduction to Global Positioning System

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,...
Errors in Global Positioning System01:26

Errors in Global Positioning System

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

Field Application of Global Positioning System

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...
Types of Global Positioning System Surveys01:30

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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...
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

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 served as...
Application of Linearization and Approximation01:29

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A drone flying through complex terrain often relies on more than one sensing method to estimate small changes in altitude. Along with direct measurements, air pressure provides a useful indirect indicator of vertical movement. Atmospheric pressure decreases as altitude increases, and this relationship is commonly described using an exponential model. Although accurate, converting pressure measurements into altitude values requires calculations that are too complex to perform repeatedly during...

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Haptic/Graphic Rehabilitation: Integrating a Robot into a Virtual Environment Library and Applying it to Stroke Therapy
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Enhanced Route navigation control system for turtlebot using human-assisted mobility and 3-D SLAM optimization.

Ankit Kumar1, Kamred Udham Singh2, Pankaj Dadheech3

  • 1Department of Information Technology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, India.

Heliyon
|March 11, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces an intelligent navigation system for a power-assisted Turtlebot to aid human mobility. The system uses a rotating Kinect sensor and Kalman filter for accurate path perception and localization, enhancing wheelchair navigation research.

Keywords:
Kalman filterNavigation systemRouteSLAMSmart wheelchair

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Area of Science:

  • Robotics
  • Artificial Intelligence
  • Human-Computer Interaction

Background:

  • Autonomous systems are crucial for enhancing human mobility.
  • Existing navigation systems require further refinement for user-centric applications.
  • Robotic platforms like the Turtlebot offer potential for assistive technologies.

Purpose of the Study:

  • To develop and evaluate an intelligent navigation system for a power-assisted Turtlebot.
  • To enhance human mobility through autonomous robotic assistance.
  • To investigate the effectiveness of sensor-based navigation and Simultaneous Localization and Mapping (SLAM) for assistive robots.

Main Methods:

  • Implementation of an intelligent navigation system relying on individual instructions and a rotating Kinect sensor.
  • Utilization of the Kalman filter for addressing localization and mapping challenges within the SLAM framework.
  • Experimental validation on a U-shaped pathway to measure deviations and assess performance in forward and reverse navigation.

Main Results:

  • The system demonstrated effective path perception and navigation using a rotating Kinect sensor.
  • The Kalman filter approach achieved accurate system state estimation for localization and mapping.
  • Experiments revealed a 5%-6% increase in diversion when navigating in reverse compared to forward.

Conclusions:

  • The developed navigation system shows promise for enhancing human mobility and assistive robotics.
  • The findings provide valuable insights for refining navigation algorithms in robotic systems.
  • This research lays a foundation for future advancements in autonomous wheelchair navigation systems.