空间科学学报2025，Vol.45Issue(1)：135-148,14.DOI:10.11728/cjss2025.01.2024-0063
近红外波段大气偏振态研究及实验验证
Research and Experimental Verification of Atmospheric Polarization State in the Near-infrared Band
摘要
Abstract
The study of atmospheric polarization is the prerequisite and foundation for polarization de-tection,polarization remote sensing,polarization imaging and other applications.Compared with the vis-ible wavelength,the research on atmospheric polarization state in the near-infrared wavelength is rela-tively lagging behind.The existing literature is dominated by theoretical analysis and lacks experimen-tal verification.In this paper,a short-wave infrared image sensor,an infrared lens,an infrared polarizer,an infrared filter,etc.are used to build a near-infrared atmospheric polarization measurement system,and the polarization state of the atmosphere in the near-infrared band of 900～1700 nm is measured in the whole sky under the sunny weather conditions.The results show that the atmosphere shows stable polarization patterns in the near-infrared band,in which the stability of the atmospheric polarization an-gle distribution is obviously better than that of the atmospheric polarization degree distribution;the at-mospheric polarization patterns are in good agreement with the Rayleigh scattering characterization model,with 83%of the points in the whole sky area having a polarization angle error of less than 10°,and 79%of the points having a polarization degree error of less than 0.1,which makes it possible to pre-dict the atmospheric polarization states in various directions effectively by relying on the Rayleigh scat-tering characterization model.In addition,the overall polarization of the atmosphere in the whole day-time area is not high,with an average value of 0.13,and only 0.1 at noon,which is different from the theoretical derivation and assumption of the previous literature,and the applicability of polarization fil-tering technology to the detection of daytime targets should be investigated in depth in the context of specific applications.关键词
大气偏振模式/瑞利散射/近红外/偏振度/偏振角Key words
Atmospheric polarization mode/Rayleigh scattering/Near-infrared/Degree of polarization/Angle of polarization分类
天文与地球科学引用本文复制引用
陈智兴,勾万祥,佟帅,张梦瑶,李崇辉..近红外波段大气偏振态研究及实验验证[J].空间科学学报,2025,45(1):135-148,14.基金项目
国家自然科学基金面上项目(U23A20280)和河南省自然科学基金项目(212300410421)共同资助 （U23A20280）
