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Related Concept Videos

Errors in Global Positioning System01:26

Errors in Global Positioning System

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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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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...
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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

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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...
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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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Introduction to Global Positioning System01:30

Introduction to Global Positioning System

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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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Meridians01:28

Meridians

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In surveying, meridians are vital reference lines to measure directions and establish accurate land orientations. Meridians run from the north to the south poles, providing a stable framework for angular measurements and mapping. Meridians are fundamental in survey design, with the primary types being astronomic, magnetic, and assumed meridians. Each type offers distinct benefits and limitations, selected based on the project's scale and precision needs.The astronomic meridian is aligned with...
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Updated: May 21, 2025

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Accurate Localization Method Combining Optimized Hybrid Neural Networks for Geomagnetic Localization with

Suqing Yan1,2, Baihui Luo2, Xiyan Sun3

  • 1Guangxi Key Laboratory of Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, China.

Sensors (Basel, Switzerland)
|March 17, 2025
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Summary
This summary is machine-generated.

This study introduces a novel fusion localization algorithm using particle swarm optimization (PSO) to enhance geomagnetic localization and heading estimation. The method improves accuracy and robustness in location-based services.

Keywords:
dead reckoningheading estimationhierarchical BiLSTMindoor localizationparticle swarm optimization

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Area of Science:

  • Geomatics Engineering
  • Computer Science
  • Artificial Intelligence

Background:

  • Location-based services (LBS) offer significant economic and social advantages.
  • Geomagnetism presents a ubiquitous, low-cost, and accessible resource for localization.
  • Existing geomagnetic localization techniques face challenges with location ambiguity.

Purpose of the Study:

  • To develop a robust and accurate fusion localization algorithm.
  • To overcome the limitations of traditional geomagnetic localization methods.
  • To enhance heading estimation for improved dead reckoning.

Main Methods:

  • A five-dimensional hybrid LSTM (5DHLSTM) neural network was developed for geomagnetic localization, with parameters optimized using particle swarm optimization (PSO).
  • An eight-dimensional BiLSTM (8DBiLSTM) algorithm was employed for accurate heading estimation in pedestrian dead reckoning (PDR).
  • Fusion localization was achieved by integrating geomagnetic localization with an improved PDR (IPDR) utilizing an extended Kalman filter (EKF).

Main Results:

  • The proposed PSO-5DHLSTM-IPDR method demonstrated improved localization accuracy in experimental validation.
  • The algorithm exhibited good robustness and flexibility across different scenarios.
  • Enhanced heading accuracy was achieved through the 8DBiLSTM algorithm, contributing to overall localization performance.

Conclusions:

  • The developed fusion localization algorithm effectively addresses location ambiguity in geomagnetic localization.
  • The integration of PSO-optimized 5DHLSTM and 8DBiLSTM with EKF-based IPDR offers a superior solution for LBS.
  • The method shows significant potential for practical applications requiring precise and reliable positioning.