复杂云层条件下大气偏振导航工作波段选择  

Selection of Working Wavelength for Atmospheric Polarization Navigation in Complex Cloud Conditions

作　　者：单睿䶮 李康 张牧尧 董联庆 郑国宪[1] 王钰 SHAN Ruiyan;LI Kang;ZHANG Muyao;DONG Lianqing;ZHENG Guoxian;WANG Yu(Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China)

机构地区：[1]北京空间机电研究所,北京100094

出　　处：《航天返回与遥感》2025年第1期73-82,共10页Spacecraft Recovery & Remote Sensing

摘　　要：随着户外探险和应急响应等人类活动对精确导航需求的不断增加,传统导航技术在复杂环境下难以提供高精度导航。近年来,基于偏振特性的大气偏振导航技术因其环境稳定性、强抗干扰能力及完全自主的特性,成为研究热点。然而,目前基于可见光波段的大气偏振导航技术主要应用于晴朗天气,在复杂天气下表现出效能不足和导航精度差的缺点。为解决这一问题,文章从大气辐射传输特性出发,基于Mie散射和蒙特卡洛传输原理,进行了不同云层条件下的大气辐射传输及偏振信息的仿真计算分析和外场试验验证。结果表明,在复杂云层条件下,350 nm紫外波段表现出更高的前向散射和透射能力,具有更优的探测效能。在浅云、中云、厚云天气下,紫外波段的大气偏振度分别比可见波段高78.57%、168.37%和126.73%,且紫外波段的大气偏振角图像在结构稳定性和图像清晰度方面远高于可见波段。文章研究结果可为大气偏振导航领域在复杂环境下的应用与发展提供新的解决思路。With the increasing demands for precise navigation in human activities such as outdoor exploration and emergency response,traditional navigation technologies struggle to provide high-accuracy navigation in complex environments.In recent years,the atmospheric polarization navigation technology,based on polarization characteristics,has become a research hotspot due to its high environmental stability,strong antiinterference capability,and fully autonomous features.However,current atmospheric polarization navigation based on visible light wavelengths is primarily effective in clear weather conditions,showing insufficient performance and poor navigation accuracy in complex weather conditions.To solve this problem,this paper starts from the characteristics of atmospheric radiation transmission and conducts simulation calculations and field test verifications of atmospheric radiation transmission and polarization information under different cloud conditions,based on Mie scattering and the principle of Monte Carlo transmission.The results indicate that under complex cloud conditions,the 350 nm ultraviolet wavelength demonstrates higher forward scattering and transmission capabilities,providing superior detection performance.In shallow cloud,medium cloud,and thick cloud weather conditions,the degree of atmospheric polarization in the ultraviolet wavelength is higher than that in the visible wavelength by 78.57%,168.37%,and 126.73%,respectively,and the atmospheric polarization angle images in the ultraviolet wavelength exhibit much higher structural stability and image clarity compared to the visible wavelength.The research findings of this paper can provide new insights for the application and development of atmospheric polarization navigation in complex environments.

关 键 词：MIE散射 蒙特卡洛 紫外偏振 大气偏振导航 

分 类 号：P161.3[天文地球—天文学] U666.131[交通运输工程—船舶及航道工程]