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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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Related Experiment Video

Updated: Apr 6, 2026

Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind
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Landmark-Based Indoor Positioning for Visually Impaired Individuals.

Yicheng Bai1, Wenyan Jia2, Hong Zhang3

  • 1Department of Electrical & Computer Engineering, Pittsburgh, PA 15213, USA.

International Conference on Signal Processing Proceedings. International Conference on Signal Processing
|July 28, 2015
PubMed
Summary
This summary is machine-generated.

This study introduces a new landmark-based system for indoor positioning, crucial for visually impaired individuals. Preliminary tests show it provides accurate location information in complex buildings without GPS.

Keywords:
Wearable computerblind and visually impairmentindoor positioningnavigation

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Area of Science:

  • Assistive Technology
  • Robotics
  • Human-Computer Interaction

Background:

  • Independent living for visually impaired individuals relies on accurate position localization.
  • Indoor environments pose challenges for localization due to lack of GPS and complex structures.

Purpose of the Study:

  • To present a novel landmark-based assistive system for indoor positioning.
  • To address the limitations of existing indoor localization methods for the visually impaired.

Main Methods:

  • Development of a novel landmark-based indoor positioning system.
  • Preliminary testing and validation in diverse building environments.

Main Results:

  • The proposed system demonstrates accurate indoor location information.
  • The system is effective in complex building structures where GPS is unavailable.

Conclusions:

  • The landmark-based system offers a viable solution for indoor positioning challenges.
  • This technology can significantly enhance independent living for visually impaired individuals.