Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

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

438
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...
438
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

346
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...
346
Errors in Global Positioning System01:26

Errors in Global Positioning System

381
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,...
381
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

407
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...
407
Introduction to Global Positioning System01:30

Introduction to Global Positioning System

661
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,...
661
Methods of Obtaining Topography01:25

Methods of Obtaining Topography

394
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
394

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

[Isolation of functional bacteria guided by PCR-DGGE technology from high temperature petroleum reservoirs].

Huan jing ke xue= Huanjing kexue·2008
Same author

Assessing the spatial extent of breast tumor intrinsic optical contrast using ultrasound and diffuse optical spectroscopy.

Journal of biomedical optics·2008
Same author

alpha4/7-conotoxin Lp1.1 is a novel antagonist of neuronal nicotinic acetylcholine receptors.

Peptides·2008
Same author

[Construction and characterization of avian pathogenic Escherichia coli mutants with iro and/or tsh gene mutation].

Sheng wu gong cheng xue bao = Chinese journal of biotechnology·2008
Same author

[Enhancement of GFP expression by Kozak sequence +4G in HEK293 cells].

Sheng wu gong cheng xue bao = Chinese journal of biotechnology·2008
Same author

Sphingomyelin synthase 2 deficiency attenuates NFkappaB activation.

Arteriosclerosis, thrombosis, and vascular biology·2008

Related Experiment Video

Updated: Mar 10, 2026

Orienteering as a Tool for Cognitive Research: An Implementation Guide
07:13

Orienteering as a Tool for Cognitive Research: An Implementation Guide

Published on: November 29, 2024

1.6K

An Indoor Positioning Method for Smartphones Using Landmarks and PDR.

Xi Wang1, Mingxing Jiang2, Zhongwen Guo3

  • 1Department of Computer Science and Technology, Ocean University of China, Qingdao 266100, China. abwangxi@163.com.

Sensors (Basel, Switzerland)
|December 17, 2016
PubMed
Summary

A new Landmark-aided PDR (LaP) system enhances indoor positioning by using WiFi signals and landmarks to correct errors. This lightweight approach offers accurate, real-time location-based services (LBS) with an average accuracy of 2.17 m.

Keywords:
PDRfusionindoor positioninglandmarks

More Related Videos

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study
07:51

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study

Published on: March 14, 2017

17.4K
Evaluation of a Smartphone-based Human Activity Recognition System in a Daily Living Environment
06:49

Evaluation of a Smartphone-based Human Activity Recognition System in a Daily Living Environment

Published on: December 11, 2015

9.4K

Related Experiment Videos

Last Updated: Mar 10, 2026

Orienteering as a Tool for Cognitive Research: An Implementation Guide
07:13

Orienteering as a Tool for Cognitive Research: An Implementation Guide

Published on: November 29, 2024

1.6K
Video Movement Analysis Using Smartphones ViMAS: A Pilot Study
07:51

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study

Published on: March 14, 2017

17.4K
Evaluation of a Smartphone-based Human Activity Recognition System in a Daily Living Environment
06:49

Evaluation of a Smartphone-based Human Activity Recognition System in a Daily Living Environment

Published on: December 11, 2015

9.4K

Area of Science:

  • Computer Science
  • Electrical Engineering
  • Geomatics Engineering

Background:

  • Location-based services (LBS) are increasingly vital in indoor environments.
  • Existing WiFi-based and Pedestrian Dead Reckoning (PDR) fusion methods for indoor positioning face challenges like heavy computation and real-time usability.
  • There is a need for efficient and accurate indoor positioning systems.

Purpose of the Study:

  • To develop a lightweight and real-time indoor positioning system by fusing WiFi and PDR.
  • To address the limitations of existing fusion techniques, particularly computational load and real-time applicability.
  • To improve the accuracy of indoor positioning using map information and landmarks.

Main Methods:

  • Studied indoor map information and analyzed WiFi Received Signal Strength (RSS) variations.
  • Defined and utilized indoor landmarks to correct accumulated errors from PDR.
  • Developed a fusion scheme named Landmark-aided PDR (LaP).
  • Implemented LaP using an Android application for real-time testing and comparison.

Main Results:

  • The Landmark-aided PDR (LaP) scheme is lightweight and suitable for real-time implementation.
  • LaP demonstrated significant accuracy improvements compared to other PDR-based fusion approaches.
  • Achieved an average positioning accuracy of 2.17 meters.

Conclusions:

  • LaP offers an effective solution for accurate and real-time indoor positioning.
  • The fusion of map information, WiFi RSS, and landmarks with PDR overcomes limitations of previous methods.
  • The developed system provides a practical and efficient approach for enhancing indoor LBS.