高精度激光告警参数提取算法

High-precision parameter extraction algorithm of laser alarm

  • 摘要: 激光告警系统通过提取来袭激光的相关参数进行告警定位,其角度定位精度直接与战场生存能力相关。为了有效提高激光告警系统的角度定位精度,基于光栅衍射型激光告警原理,提出一种高精度测量来袭激光参数的算法。对激光告警系统进行标定,用高斯拟合法精确提取出衍射光斑标定图片的0级光斑中心,将来袭激光角度与对应角度的光斑中心进行拟合,根据拟合结果确定任意角度的光斑衍射图像对应的来袭激光角度参数。实验结果表明,方位角测量误差优于0.29°,俯仰角测量误差优于0.38°。该算法有效提高了激光告警系统的测算精度。

     

    Abstract: The laser warning system performs warning positioning by extracting the relevant parameters of incoming laser, and its angle positioning accuracy is directly related to the battlefield survivability. In order to effectively improve the angle positioning accuracy of the laser warning system, an algorithm for high-precision measurement of incoming laser parameters was proposed based on the principle of grating diffraction laser warning. Firstly, the laser warning system was calibrated, and the 0-level spot center of the diffraction spot calibration image was accurately extracted by Gaussian fitting. The laser angle of the future attack was fitted with the spot center of the corresponding angle. According to the fitting results, the angle parameters of the incoming laser corresponding to the diffraction image of the spot at any angle were determined. The experimental results show that the azimuth measurement error is better than 0.29°, and the pitch measurement error is better than 0.38°. The algorithm effectively improves the measurement accuracy of the laser warning system.

     

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