| Calculation algorithm of high-precision two-dimensional broadband laser warning parameters北大核心CSCD |
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| 引用本文： | 吴琼,张瑞,石金,杜伟豪,李晓,王志斌,李孟委.Calculation algorithm of high-precision two-dimensional broadband laser warning parameters北大核心CSCD[J].应用光学,2022,43(1):111-118. |
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| 作者姓名： | 吴琼 张瑞 石金 杜伟豪 李晓 王志斌 李孟委 |
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| 作者单位： | 1.中北大学 电气与控制工程学院, 山西 太原 030051 |
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| 基金项目： | 山西省回国留学人员科研资助项目(HGKY2019067);山西省面上自然基金(201901D111158);山西省面上青年基金(201801D221211);山西省创新项目(2019L0530)。 |
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| 摘 要： | 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. Copyright ©2022 Journal of Applied Optics. All rights reserved.
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| 关 键 词： | 激光告警 光栅衍射 畸变校正 连通区域 中心提取 |
| 收稿时间： | 2021-07-30 |
Calculation algorithm of high-precision two-dimensional broadband laser warning parameters |
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| 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. |
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| Authors: | WU Qiong ZHANG Rui SHI Jin DU Weihao LI Xiao WANG Zhibin LI Mengwei |
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| Institution: | 1.School of Electrical and Control Engineering, North University of China, Taiyuan 030051, China2.Shanxi Provincial Photoelectric Information and Instrument Engineering Technical Research Center, North University of China, Taiyuan 030051, China3.Research Institute of Advanced Interdisciplinary Science, North University of China, Taiyuan 030051, China |
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| 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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| Keywords: | laser warning grating diffraction distortion correction connected area center extraction |
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