基于双目CMOS图像传感的激光告警技术  

Laser warning technology based on binocular CMOS image sensor

作　　者：牛家麒 张瑞[2,3,4] 石金 张卓奇 张子暄 王志斌 李孟委[1,2,4] NIU Jiaqi;ZHANG Rui;SHI Jin;ZHANG Zhuoqi;ZHANG Zixuan;WANG Zhibin;LI Mengwei(School of Instrument and Electronics,North University of China,Taiyuan 030051,China;Academy for Advanced Interdisciplinary Research,North University of China,Taiyuan 030051,China;School of Information and Communication Engineering,North University of China,Taiyuan 030051,China;Engineering and Technology Research Center of Shanxi Provincial for Optical-Electric Information and Instrument,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学仪器与电子学院,山西太原030051 [2]中北大学前沿交叉科学研究院,山西太原030051 [3]中北大学信息与通信工程学院,山西太原030051 [4]中北大学山西省光电信息与仪器工程技术研究中心,山西太原030051

出　　处：《应用光学》2024年第6期1291-1297,共7页Journal of Applied Optics

基　　金：国家自然科学基金(62105302);山西省基础研究计划(20210302124269)。

摘　　要：针对二维激光告警中测量来袭激光波长和角度分辨率低且视场角度范围低的问题,提出了一种采用双目图像传感器实现激光告警的方案。该方案的系统主要由光栅、透镜组和2个COMS图像传感器组成。基于光栅衍射原理进行双目探测以提高测量角度分辨率,通过来袭激光经过光栅衍射后相邻两级的衍射光斑在CMOS_1上的像素距离,得到来袭激光的波长,通过入射激光在CMOS_2图像传感器中的光斑中心位置,得到来袭激光的二维方向角。通过实验验证了其测量可行性。实验结果表明,改进后测得的波长分辨率优于6 nm,角度分辨率为0.1°,视场角为±50°,角度测量精度为0.1°。Aiming at the problems of low resolution of wavelength and angle,and low angle range of field of view of incoming laser measurement in two-dimensional laser alarm,a scheme of laser alarm using binocular image sensor was proposed.The optical system was mainly composed of grating,lens group and two COMS image sensors.Based on the grating diffraction principle,binocular detection was carried out to improve the angular resolution of measurement.The wavelength of the incoming laser was obtained by measuring the pixel distance of the diffraction spot of two adjacent levels on CMOS_1,and the two-dimensional direction angle of the incoming laser was obtained by measuring the center position of the spot of the incident laser in the CMOS_2 image sensor.The measurement feasibility was verified by experiments.The experimental results show that the improved wavelength resolution is better than 6 nm,the angle resolution is 0.1°,the angle of field is±50°,and the accuracy of angle measurement is 0.1°.

关 键 词：激光告警 双目探测 光栅衍射 波长 二维方向角 

分 类 号：TN249[电子电信—物理电子学]