Stokes矢量偏振光的仿生物导航方法研究
摘要当前各类武器精确导航系统主要采用的是惯性导航系统和全球定位导航系统，但易 受干扰且非自主。而某些昆虫例如沙蚁等，却能利用偏振光信息进行导航。太阳光在入 射到大气层之前是自然光，而经过大气层时，由于大气层内的分子和粒子的散射作用， 使自然光变成了偏振光，这就是偏振光的产生过程。为了探究昆虫利用偏振信息的原理， 本文对天空光的散射现象进行了研究，并探讨了昆虫利用偏振光导航的原理。然后介绍 了四种描述偏振光的数学方法，并对每一种进行了分析和说明。为了引出偏振角和偏振 度的表征方式，先对天空光偏振模式进行了说明，然后推导出了偏振角和偏振度的计算 方法。并由偏振角推导出航向角的计算方法。利用 Stokes 矢量的表述法，得出了由偏振 传感器得到偏振角和偏振度的方法。最后得到了偏振光传感器模型，并对结构设计和软 件设计进行了说明。 81012
毕业论文关键词 天空偏振光 偏振角 偏振度 Stokes 矢量 偏振光传感器模型
毕 业 设 计 说 明 书 外 文 摘 要
Title Research on Biomimetic Navigation Method Based on Polarized Light
Abstract We use inertial navigation system and GPS for navigation in daily life。 But insects such as ants use polarized light information for navigation。 Actually, the sunlight is natural before entering into a tmosphere and then it turns into the polarized light due to the s cattering of molecules and particles in atmosphere when going throug h atmosphere, which is the production of polarized light。 In order to figure out how insects use information of polarized light for n avigation, firstly, we made researches on scattering of skylight, an d then analyzed principles of polarized light used by insects。 Fina lly, this thesis introduced four mathematic methods on describing po larized light and made detailed analyses and explanations of each m ethod。 To elicit the representation of polarizing angle and the pol arizing degree, at first, we explained the light polarization model of skylight, then deduced the calculation method for polarizing angl e and polarizing degree and deduced the calculation method for path angle according to polarizing angle。 By using the Stokes vector exp ression, we got the polarization angle andpolarization by the polari zation sensor。 Finally we got the polarization sensor model, and ma de fully explanation for structure and design。
Keywords polarized light; polarizing angle; polarizing degree; Stokes vector; polarized light sensor model。
目 次
1 绪论 1
1。1 研究背景和意义 1
1。3 论文章节安排 3