干扰环境下的大气偏振导航方法  

Atmospheric Polarization Navigation Method in Interference Environment

作　　者：董万卷 范之国[1] 金海红[1,2] Dong Wanjuan;Fan Zhiguo;Jin Haihong(School of Computer Science and Information Engineering,Hefei University of Technology,Hefei,230601,Anhui,China;School of Electronic and Information Engineering,Anhui Jianzhu University,Hefei,230601,Anhui,China)

机构地区：[1]合肥工业大学计算机与信息学院,安徽合肥230601 [2]安徽建筑大学电子与信息工程学院,安徽合肥230601

出　　处：《激光与光电子学进展》2024年第23期132-140,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61571177)。

摘　　要：仿生偏振光导航可以利用大气偏振模式作为方向基准进行精确导航和定位,在大气偏振模式测量过程中,当太阳直射镜头或视野受到遮挡时,对大气偏振模式的测量会受到干扰,从而导致导航精度降低。为了减少这些受干扰区域对偏振导航精度产生的影响,提出了一种基于偏振角与偏振度信息的去干扰算法,并基于瑞利散射模型获取太阳子午线方向实现导航定向。实验结果表明,本方法不仅能够对受干扰区域进行准确划分,还能够提高偏振导航的精度。对于去干扰前航向角误差大于2.00°的数据,航向角误差平均值为5.37°,去干扰后航向角误差平均值为1.56°;对于去干扰前航向角误差小于2.00°的数据,航向角误差平均值为1.13°,去干扰后航向角误差平均值为0.59°。In biomimetic polarized-light navigation,atmospheric polarization modes can be used as directional benchmarks to achieve precise navigation and location.In the measurement of atmospheric polarization modes,when the direct sunlight lens or field of view is obstructed,the measurement will be interfered,thus resulting in reduced navigation accuracy.To reduce the effect of these perturbed areas on polarization-navigation accuracy,this study proposes an anti-interference algorithm based on the polarization angle and degree to eliminate interference and uses the Rayleigh scattering model to obtain the direction of the solar meridian for navigation orientation.Experimental results show that this method can not only accurately partition the interference area but also improve the accuracy of polarization navigation methods.For data with heading-angle errors exceeding 2.00°before and after anti-interference,the average heading-angle errors are 5.37°and 1.56°,respectively.For data with heading-angle errors of less than 2.00°before and after anti-interference,the average heading-angle errors are 1.13°and 0.59°,respectively.

关 键 词：大气偏振模式 偏振光导航 图像聚类 偏振角 偏振信息干扰 

分 类 号：P427.1[天文地球—大气科学及气象学]