全球定位系统2023，Vol.48Issue(6)：81-90,10.DOI:10.12265/j.gnss.2023135
可用于天空偏振场导航的超分辨光学相机
Super-resolution optical camera for sky polarization field navigation
摘要
Abstract
The sky polarized light field can be used for navigation,but there is currently no polarization navigation system that can be applied in practical environment.One of the reasons is that the imaging camera used to collect the sky polarized light field is not standardized.This paper designs a super-resolution imaging polarization optical camera with the sky polarization field navigation.We apply a focal plane polarization detector to achieve the fast polarization image information acquisition and adopt a method of integrating fast moving platforms with optical systems to meet the special high-resolution requirements.This paper presents the design results of the camera system,introduces the calibration method of the super-resolution polarization camera and achieves the precise calibration.The precise voltage curve used for displacement control between the image and the detector is obtained.We utilize this data to accurately obtain polarization images of the target scene,while also obtaining the high-quality sky polarization field distribution data.The research results presented in this article have imaging capabilities that reach the diffraction limit.Optical cameras have the field curvature better than 50 μm,the distortion better than 0.7‰,and super-resolution imaging capabilities better than 2 times.The acquisition of high-quality linear polarization image data provides a raw data foundation for the subsequent polarization precise navigation and polarization feature measurement.关键词
偏振相机设计/超分辨/天空偏振场导航/超分辨标定/偏振成像Key words
polarization camera design/super resolution/sky polarization field navigation/super-resolu-tion calibration/polarization imaging分类
天文与地球科学引用本文复制引用
姚东,张飞舟,晏春回,张子晗,秦鑫,李延飞..可用于天空偏振场导航的超分辨光学相机[J].全球定位系统,2023,48(6):81-90,10.基金项目
国家重点研发计划(2022YFC2807402) （2022YFC2807402）
中科院基金(8091A140309) （8091A140309）
