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Millimeter-precision positioning for wide-angle indoor area enabled by metalens-integrated camera
Muyang Li1, Yue Wu1, Haobai Li1
1National Mobile Communications Research Laboratory, School of Information Science and Engineering, Frontiers Science Center for Mobile Information Communication and Security, Southeast University, Nanjing 210096, China.
Nanophotonics (Berlin, Germany)
|December 5, 2024
Summary
This study introduces a novel indoor positioning system using a metalens-integrated camera for millimeter-precision localization. The technology offers robust, wide-angle indoor navigation, overcoming limitations of traditional outdoor systems like GPS.
Area of Science:
- Optics
- Indoor Navigation Systems
- Sensing Technology
Background:
- Global Positioning System (GPS) is ineffective indoors due to signal obstruction.
- High-precision indoor positioning is crucial for applications like wireless optical communications (OWCs), building navigation, and warehouse management.
Purpose of the Study:
- To propose a millimeter-precision indoor positioning technology using a metalens-integrated camera.
- To enable accurate device localization through imaging of beacon Light Emitting Diodes (LEDs).
Main Methods:
- Development of a metalens-integrated camera with a wide-angle imaging design.
- Localization of devices by capturing images of beacon LEDs.
- Comparison with traditional photodiode (PD) positioning schemes.
Main Results:
- Achieved millimeter-level positioning accuracy across a wide-angle (approximately 120°) indoor area.
- Demonstrated superior resistance to external signal interference compared to photodiode methods.
- The system maintains positioning precision even in distant corner locations.
Conclusions:
- The metalens-integrated camera system provides robust, millimeter-precision indoor localization.
- Its compact size and high performance allow integration into portable devices like smartphones and drones.
- This technology has broad potential applications in various indoor navigation and management scenarios.
