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Pulsed laser beam control by hot spot tracking.

J S Accetta¹, A Erteza

¹J. S. Accetta, Inc., P.O. Box 2405, Ann Arbor, Michigan 48103, USA.

|August 1, 1983

Summary

This study introduces a body-centered reference for precise pulsed laser hot spot tracking. A compensation scheme enhances stability and reduces boresight error drift for optimal performance.

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Area of Science:

Physics
Optical Engineering
Thermal Science

Background:

Precision tracking of pulsed laser hot spots is critical in various scientific and industrial applications.
Existing methods face challenges with inherent instability and tracking resolution.
Infrared sensing offers a potential avenue for non-contact hot spot monitoring.

Purpose of the Study:

To evaluate a novel self-developed body-centered reference system for pulsed laser hot spot tracking.
To compare the tracking resolution and sensitivity of infrared sensors in different wavelength bands.
To develop and assess a compensation scheme for improving tracking stability and reducing boresight error drift.

Main Methods:

Numerical computer simulation employing a solution to the heat equation with time-varying input flux.
Analysis of tracking performance using two common infrared sensor bands.
Implementation and evaluation of a simple compensation scheme to mitigate instability.

Main Results:

The body-centered reference system demonstrates feasibility for precision hot spot tracking.
Comparison reveals differences in resolution and sensitivity between infrared sensor bands.
The proposed compensation scheme significantly improves boresight error drift.

Conclusions:

The developed body-centered reference is effective for pulsed laser hot spot tracking.
Sensor wavelength band and sampling time selection are crucial for optimizing performance.
The compensation strategy offers a practical solution for enhancing tracking accuracy and stability.

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