Camera-guided real-time laser ranging for multi-UAV distance measurement.

Area of Science:

• Robotics and Automation
• Optical Engineering
• Aerospace Engineering

Background:

• Accurate real-time localization of multiple unmanned aerial vehicles (UAVs) is critical for coordinated operations.
• Existing localization methods may face limitations in scalability and precision for dynamic multi-UAV scenarios.

Purpose of the Study:

• To design and implement a scalable prototype system for real-time distance measurement and precise localization of multiple UAVs.
• To integrate a laser ranger finder (LRF) with a camera and fast steering mirror (FSM) for accurate target tracking and rangefinding.

Main Methods:

• A novel system combining a telescope, camera, LRF, and FSM was developed.
• A dichroic mirror was used to align the optical paths of the camera and LRF.
• The FSM dynamically adjusted the LRF's aim based on the UAV's angular position in the camera's field of view.

Main Results:

• The prototype system successfully demonstrated real-time distance measurements for multiple UAVs.
• Accurate distance measurements were achieved for up to four UAVs simultaneously.
• The system operated with a measurement bandwidth of 14 Hz per object.

Conclusions:

• The developed LRF-based system provides a scalable and effective solution for real-time multi-UAV localization.
• The integration of LRF, camera, and FSM enables precise distance measurement and accurate UAV positioning.
• This technology has significant potential for enhancing cooperative UAV missions and aerial robotics.