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Related Experiment Video

Updated: Jun 27, 2026

Technical Approach for Infrared Tracking for Soft Tissue Navigation with a Holographic Head-Mounted Display and Preclinical Validation
10:25

Technical Approach for Infrared Tracking for Soft Tissue Navigation with a Holographic Head-Mounted Display and Preclinical Validation

Published on: September 2, 2025

3D Self-Localization and Tracking with Minimum Anchor Dependency: A Hybrid Measurement and EKF-Based Approach.

Amani Atiani1, Mohammed El-Absi1, Thomas Kaiser1

  • 1Institute of Digital Signal Processing, University of Duisburg-Essen, 47057 Duisburg, Germany.

Sensors (Basel, Switzerland)
|June 26, 2026
PubMed
Summary
This summary is machine-generated.

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This study demonstrates sub-millimeter 3D localization and tracking using terahertz (THz) chipless RFID tags. The hybrid approach combines time-of-flight and angle-of-arrival for accurate positioning with minimal infrastructure.

Area of Science:

  • Wireless communication
  • Localization and tracking technologies
  • Terahertz (THz) applications

Background:

  • Accurate 3D localization and tracking are crucial for advanced applications.
  • Existing systems often require extensive infrastructure.
  • Chipless RFID in the terahertz band offers potential for high-resolution sensing.

Purpose of the Study:

  • To investigate the feasibility of 3D self-localization and tracking using THz chipless RFID.
  • To achieve sub-millimeter accuracy with reduced reliance on external infrastructure.
  • To develop and evaluate a hybrid localization framework.

Main Methods:

  • Proposed a hybrid localization framework combining Round-Trip Time-of-Flight (RToF) and Angle-of-Arrival (AoA) measurements.
  • Utilized a simplified far-field approximation for tractable system modeling.
Keywords:
Fisher information matrixextended Kalman filterhybrid schemeindoor self-localization and trackinginfrastructure dependencysub-mm accuracyterahertz

Related Experiment Videos

Last Updated: Jun 27, 2026

Technical Approach for Infrared Tracking for Soft Tissue Navigation with a Holographic Head-Mounted Display and Preclinical Validation
10:25

Technical Approach for Infrared Tracking for Soft Tissue Navigation with a Holographic Head-Mounted Display and Preclinical Validation

Published on: September 2, 2025

  • Extended the framework for dynamic scenarios using an Extended Kalman Filter (EKF)-based tracking algorithm.
  • Derived the Cramér-Rao Lower Bound (CRLB) for performance analysis.

    • Main Results:

    • Achieved sub-millimeter localization and tracking accuracy.
    • Demonstrated effective performance with a highly constrained anchor infrastructure, including single-anchor operation.
    • The EKF-based tracking improved robustness under noisy measurements.
    • CRLB analysis established fundamental limits of accuracy.

    Conclusions:

    • THz chipless RFID technology is a viable solution for high-accuracy 3D localization and tracking.
    • The proposed hybrid RToF-AoA framework enables precise positioning with minimal infrastructure.
    • This technology holds promise for next-generation localization applications.