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Weak Calibration of a Visible Light Positioning System Based on a Position-Sensitive Detector: Positioning Error

Álvaro De-La-Llana-Calvo1, José-Luis Lázaro-Galilea1, Alfredo Gardel-Vicente1

  • 1Department of Electronics, University of Alcalá, Alcalá de Henares, 28801 Madrid, Spain.

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Summary
This summary is machine-generated.

This study introduces a simple, low-cost indoor positioning system calibration method using lighting and genetic algorithms. It achieves high accuracy, reducing setup complexity and cost for scalable indoor navigation.

Keywords:
genetic algorithmsindoor positioning system (IPS)position sensitive detector (PSD)soft/weak calibrationvisible light positioning (VLP)

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Area of Science:

  • Robotics
  • Computer Vision
  • Sensor Fusion

Background:

  • Scalable and cost-effective indoor positioning systems require reduced deployment and calibration.
  • Existing methods often involve complex infrastructure and instruments.

Purpose of the Study:

  • To propose a low-complexity, weak calibration procedure for an indoor positioning system.
  • To assess the performance of the proposed calibration against formal methods.

Main Methods:

  • Utilized infrastructure lighting and a positioning-sensitive detector.
  • Employed genetic algorithms for parameter acquisition without a priori information.
  • Required minimal, simple measurements for calibration.

Main Results:

  • Achieved maximum accuracy reduction below 25 mm compared to formal calibration.
  • Demonstrated overall absolute positioning error < 35 mm.
  • Obtained orientation errors of approximately 0.25°.

Conclusions:

  • The proposed weak calibration procedure is sufficient for many indoor positioning applications.
  • Significantly reduces the cost and complexity of setting up indoor positioning systems.
  • Enables scalable and cost-effective indoor navigation solutions.