晴朗天气下全天空域偏振定向方法  

Polarization Orientation Method for Whole Sky Area in Sunny Weather

作　　者：蔡弘 张然[1] 关乐 万振华[1] 褚金奎[1] Cai Hong;Zhang Ran;Guan Le;Wan Zhenhua;Chu Jinkui(School of Mechanical Engineering,Dalian University of Technology,Dalian,Liaoning 116023,China;School of Mechanical Engineering,Dalian University,Dalian,Liaoning 116622,China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116023 [2]大连大学机械工程学院,辽宁大连116622

出　　处：《机电工程技术》2021年第9期10-13,共4页Mechanical & Electrical Engineering Technology

基　　金：国家自然科学基金项目(编号:51675076);高校基础科研项目(编号:DUT20LAB303)。

摘　　要：天空偏振导航定向具有无误差累积、不受电磁干扰的优势。提出一种以信标发光二极管为基准的鱼眼镜头天顶角标定方法,并利用瑞利散射理论和太阳矢量约束计算载体坐标系下的太阳方位角。通过实际实验分析,所提出的方法相比拟合太阳子午线的两种方法(最小二乘法、分箱法),太阳相对转角的均方根误差(RMSE)最小为0.28°,表明这种标定方法有效,将其用于天空偏振导航定向具有可行性。The sky polarization navigation orientation has the advantages of no error accumulation and no electromagnetic interference.A method was proposed for calibrating the zenith angle of a fisheye lens based on the beacon light-emitting diode,and the Rayleigh scattering theory and the sun vector constraint were used to calculate the azimuth angle of the sun in the carrier coordinate system.Through actual experimental analysis,compared with the two methods of fitting the solar meridian(least squares method,binning method),the minimum root mean square error(RMSE)of the sun′s relative rotation angle is 0.28°.It shows that the calibration method is effective,and it is feasible for the sky polarization navigation orientation based on this method.

关 键 词：鱼眼镜头天顶角标定方法 瑞利散射理论 太阳矢量约束 

分 类 号：V249.32[航空宇航科学与技术—飞行器设计]