无人机载型曲面仿生复眼成像测速系统  

UAV-borne Biomimetic Curved Compound-eye Imaging System for Velocity Measurement

作　　者：许黄蓉 刘晋亨 张远杰 武登山[1] 樊豪 冯向朋 张耿[1,2] 胡炳樑 鱼卫星[1,2] XU Huangrong;LIU Jinheng;ZHANG Yuanjie;WU Dengshan;FAN Hao;FENG Xiangpeng;ZHANG Geng;HU Bingliang;YU Weixing(Key Laboratory of Spectral Imaging Technology of Chinese Academy of Sciences,Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi'an 710072,China;University of Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]中国科学院西安光学精密机械研究所中国科学院光谱成像技术重点实验室,西安710072 [2]中国科学院大学,北京100049

出　　处：《光子学报》2021年第9期224-230,共7页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.61975231,61475156)。

摘　　要：基于仿生复眼的视觉优势,将曲面仿生复眼结构应用于无人机载光电探测系统,实现机载宽视场高分辨运动目标探测。根据生物复眼的结构形态,设计了六边形排列的曲面透镜阵列作为曲面仿生复眼,辅以光学中继转像子系统和CMOS图像传感器,构成曲面仿生复眼成像测速系统。该系统的成像视场可达98°×98°,系统焦距为5 mm,角分辨率为1.8 mrad,F数为3.5,系统体积为Ф123 mm×195 mm,重量为1.35 kg。根据仿生复眼的成像原理,利用仿生复眼成像系统中相邻小眼存在的视场重叠优势,提出了曲面仿生复眼的测速原理,使得多个小眼能够同时探测场景中的同一个目标。运动汽车的测速实验表明该测速方法能够有效提高运动目标测试的可靠性和准确性。Based on the visual advantages of the biomimetic compound eye,the biomimetic curved compound-eye is applied to the unmanned aerial vehicle-borne photoelectric detection system to realize the airborne wide field-of-view and high-resolution detection of moving objects purposes.According to the characteristics of the biological compound eye,a lens array arranged on the curved surface in a hexagon is designed as compound-eye lens,combined with an optical relay subsystem and a CMOS image sensor to form a biomimetic curved compound-eye imaging and velocity measurement system.The developed biomimetic curved compound-eye imaging system has a field of view of 98°×98°,a system focal length of 5 mm,an angular resolution of 1.8 mrad and an F-number of 3.5.The size of the system isФ123 mm×195 mm,and the weight is 1.35 kg.According to the imaging principle of the biomimetic compound-eye and by taking advantage of the overlapping field of views between adjacent ommatidia,the velocity measurement principle of the biomimetic curved compound-eye is proposed.The velocity measurement experiment of a moving car shows that the velocity measurement method can effectively improve the test reliability and accuracy of the moving target.

关 键 词：仿生复眼 成像系统 无人机载 大视场 测速系统 

分 类 号：O439[机械工程—光学工程]