吴琼, 张瑞, 石金, 杜伟豪, 李晓, 王志斌, 李孟委. 高精度二维宽波段激光告警参数计算算法[J]. 应用光学, 2022, 43(1): 111-118. DOI: 10.5768/JAO202243.0107001
引用本文: 吴琼, 张瑞, 石金, 杜伟豪, 李晓, 王志斌, 李孟委. 高精度二维宽波段激光告警参数计算算法[J]. 应用光学, 2022, 43(1): 111-118. DOI: 10.5768/JAO202243.0107001
WU Qiong, ZHANG Rui, SHI Jin, DU Weihao, LI Xiao, WANG Zhibin, LI Mengwei. Calculation algorithm of high-precision two-dimensional broadband laser warning parameters[J]. Journal of Applied Optics, 2022, 43(1): 111-118. DOI: 10.5768/JAO202243.0107001
Citation: WU Qiong, ZHANG Rui, SHI Jin, DU Weihao, LI Xiao, WANG Zhibin, LI Mengwei. Calculation algorithm of high-precision two-dimensional broadband laser warning parameters[J]. Journal of Applied Optics, 2022, 43(1): 111-118. DOI: 10.5768/JAO202243.0107001

高精度二维宽波段激光告警参数计算算法

Calculation algorithm of high-precision two-dimensional broadband laser warning parameters

  • 摘要: 高精度光栅衍射型激光告警系统是判断来袭激光功能并进行定位的光电对抗设备。为了提高定位精度,提出了一种改进光斑中心计算并拟合计算参数的算法。首先对激光光斑进行预处理,利用改进的连通区域标记算法和光斑中心提取算法进行计算,得出连通区域的中心坐标;其次设定方位角和俯仰角,采集图像并进行光斑中心计算,拟合成x、y方向的像素横、纵坐标以及激光参数的拟合曲面,进而判断来袭激光的方位角、俯仰角和波长;最后将改进的连通区域标记算法、光斑中心提取算法及参数拟合计算结果与传统算法进行对比。实验结果表明:拟合计算结果与真实数据的俯仰角误差小于0.4°,方位角误差小于0.2°,大大提高了激光方向识别的精确度。

     

    Abstract: High precision grating diffraction laser warning system is a photoelectric countermeasure equipment to judge and locate the incoming laser function. In order to improve the positioning accuracy, an improved algorithm for calculating and fitting the calculation parameters of the spot center was proposed. Firstly, the laser spot was preprocessed, and the center coordinates of the connected area were obtained by using the improved connected area marking algorithm and spot center extraction algorithm. Secondly, the azimuth angle and pitch angle were set, the images were collected and the spot center was calculated, and the pixel horizontal and vertical coordinates in x and y direction as well as fitting surfaces of laser parameters were fitted, so as to judge the azimuth angle, pitch angle and wavelength of the incoming laser. Finally, the improved connected area marking algorithm, spot center extraction algorithm and parameter fitting calculation results were compared with the traditional algorithm. The experimental results show that the pitch angle error between the fitting calculation results and the real data is less than 0.4°, and the azimuth angle error is less than 0.2°, which greatly improves the accuracy of laser direction recognition.

     

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