基于高速图像分析的激光器光束稳定性及光斑质量评价方法研究

机载激光器的光束稳定性及光斑质量是关系到该武器系统毁伤效率的关键性因素。本文基于棱镜分光及数字图像处理技术,发展了能够在实验室实验中同时获取激光光斑位置和光强分布信息且不会对系统自身工作产生影响的方法及系统,实现了对激光光束稳定性及光斑质量的评价。该方法利用数字相机采集光斑图像,并根据像素灰度值计算光斑位置和光强分布。标定实验结果表明,该方法对光斑位置的测量误差可控制在1%以内,对光斑质量也可以实现很好的评价。

On the Laser Beam Stability and Laser Spot Quality Evaluation Method Based on High-Speed Image Analysis

Laser beam stability and laser spot quality of airborne laser are the key factors that affect weapon system damage efficiency.Based on prismatic decomposition and digital image processing technology,a method and a system for simultaneous acquisition of laser spot position and its intensity distribution information in laboratory experiment without affecting the system itself are developed.Thus,the laser beam stability and laser spot quality evaluation are realized.Results of calibration experiment show that spot location measurement error of this system can be controlled within 1％,and laser spot quality can also well evaluated by the system.