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    This study presents a novel ultraviolet communication positioning system using time-difference of arrival (TDOA). Experimental results validate the system

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    Area of Science:

    • Optical communication systems
    • Positioning and navigation technologies
    • Photonics and signal processing

    Background:

    • Accurate positioning is crucial for various applications.
    • Existing systems face limitations in certain environments.
    • Ultra-violet (UV) communication offers potential for novel positioning solutions.

    Purpose of the Study:

    • To design, realize, and evaluate a UV communication-based positioning system.
    • To investigate positioning errors using the time-difference of arrival (TDOA) principle.
    • To validate theoretical models with hardware experiments.

    Main Methods:

    • Utilizing ultra-violet (UV) communication for signal transmission.
    • Implementing the time-difference of arrival (TDOA) positioning principle.
    • Employing time division-based synchronization sequences from three transmitters.
    • Real-time hardware implementation using Field Programmable Gate Array (FPGA).

    Main Results:

    • Theoretical average error closely matched simulation results.
    • FPGA-based TDOA positioning system successfully realized.
    • Outdoor experimental results aligned well with theoretical and simulation predictions.
    • Decomposition of positioning error into transmitter-side timing and receiver-side synchronization errors.

    Conclusions:

    • Theoretical models provide reliable guidance for hardware experiments.
    • The developed UV communication positioning system demonstrates experimental feasibility.
    • The system achieves accurate positioning validated through outdoor trials.