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Rotating-prism-based tracking imaging for target-locking acquisition using second-order boresight adjustment

Zhaojun Deng, Anhu Li, Changyu Zhou

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Summary

This summary is machine-generated.

This study introduces a novel tracking imaging system using rotating double prisms for precise beam pointing. The system achieves efficient and accurate optical axis adjustment, outperforming existing methods in speed and stability.

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Area of Science:

Optical Engineering
Robotics and Control Systems

Background:

Tracking imaging systems are crucial for military reconnaissance, autonomous navigation, and security.
Existing systems often face limitations in efficiency, accuracy, and calibration complexity.

Purpose of the Study:

To develop a flexible and compact tracking imaging model with precise beam pointing.
To propose a high-efficiency and precision optical axis pointing strategy.

Main Methods:

A camera coaxially embedded with rotating double prisms forms the core of the imaging model.
A second-order boresight adjustment strategy with fast approach and accurate adjustment stages is implemented.
Azimuth-pitch coupling control is utilized for precise boresight alteration.

Main Results:

The proposed method achieves less and more stable time consumption compared to coarse-fine coupling, even for large tracking distances.
Experimental results show better than pixel-level tracking for static targets and better than 30 pixels for dynamic targets.
The system expands imaging range without camera motion and removes dependence on prior distance information, system parameters, and complex calibration.

Conclusions:

The developed tracking imaging system balances efficiency and accuracy effectively.
It offers a robust solution for target-locking acquisition in various applications.
The system demonstrates significant advantages over conventional methods in terms of performance and ease of use.