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Ultraviolet positioning via TDOA: error analysis and system prototype
Optics Express
|November 22, 2024
Summary
This study presents a novel ultraviolet communication positioning system using time-difference of arrival (TDOA). Experimental results validate the system
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.
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