A Simple Self-calibration Method for The Internal Time Synchronization of MEMS LiDAR

TL;DR

This paper introduces a straightforward self-calibration technique for internal time synchronization in MEMS LiDARs, enabling automatic calibration without external tools or targets, thus facilitating faster research and development.

Contribution

A novel robust MVG prior-based method for automatic internal time calibration of MEMS LiDARs without artificial targets or additional equipment.

Findings

Effective calibration demonstrated on actual MEMS LiDARs

Calibration process is simple and does not require external ranging equipment

Method accelerates research and development in practical applications

Abstract

This paper proposes a simple self-calibration method for the internal time synchronization of MEMS(Micro-electromechanical systems) LiDAR during research and development. Firstly, we introduced the problem of internal time misalignment in MEMS lidar. Then, a robust Minimum Vertical Gradient(MVG) prior is proposed to calibrate the time difference between the laser and MEMS mirror, which can be calculated automatically without any artificial participation or specially designed cooperation target. Finally, actual experiments on MEMS LiDARs are implemented to demonstrate the effectiveness of the proposed method. It should be noted that the calibration can be implemented in a simple laboratory environment without any ranging equipment and artificial participation, which greatly accelerate the progress of research and development in practical applications.