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Development of the high angular resolution 360° LiDAR based on scanning MEMS mirror
Donghai Yang1, Yifan Liu1, Qingjiu Chen1
1Department of Mechanical Engineering, The City University of Hong Kong, Kowloon Tong, Hong Kong, China.
Scientific Reports
|January 27, 2023
Summary
This study presents a novel microelectromechanical systems (MEMS) mirror-based 360° LiDAR system. This cost-effective solution offers significantly improved angular resolution for autonomous driving and 3D scanning applications.
Area of Science:
- Optics and Photonics
- Robotics and Automation
- Sensor Technology
Background:
- Light Detection and Ranging (LiDAR) is crucial for autonomous systems, but current multichannel systems face limitations in vertical angular resolution and cost.
- Microelectromechanical systems (MEMS) mirrors offer a potential solution for high-resolution, low-cost LiDAR.
Purpose of the Study:
- To demonstrate a 360° LiDAR system utilizing a MEMS mirror for enhanced angular resolution.
- To detail the design process and present experimental validation of the MEMS mirror-based LiDAR system.
Main Methods:
- Integration of a MEMS mirror with a rotation platform to achieve a 360° field of view (FoV).
- Characterization of the system's horizontal and vertical angular resolution through experimental testing.
Main Results:
- Achieved a 360° × 8.6° (horizontal × vertical) FoV.
- Demonstrated a superior angular resolution of 0.07° × 0.027° (horizontal × vertical), which is 13.8 times better than the Velodyne HDL-64.
- Verified enhanced panoramic scanning and imaging capabilities.
Conclusions:
- The MEMS mirror-based LiDAR system provides a cost-effective approach to achieving high angular resolution.
- This technology significantly improves 3D scanning accuracy for applications in autonomous vehicles, indoor surveying, and robotics navigation.
