【摘要】：自然界中很多生物是利用天空光偏振模式進行導航的,這為仿生學的研究提供了借鑒,仿生偏振導航逐漸成為了導航領域研究的熱點。白天太陽光偏振模式的研究已經取得了一些成績,而對月光偏振模式的研究因昏暗的月光以及研究方法的匱乏一直難以取得一定的進展。為了完善月光偏振模式以及給研制仿生導航傳感器提供實驗基礎,本文對晴朗天氣下月光的偏振模式進行了研究。 本文探究了天空光散射的基本理論,分析了月光的偏振特性；通過以月亮為觀測天體的地平坐標系,對不同月亮高度角和方位角下的月光偏振模式建立了理論模型；研制了圖像式天空光偏振模式測試儀器,并且對偏振模式測試儀器進行了標定；利用圖像式天空光偏振模式測試儀器,分別對暮光偏振模式、夜間月光偏振模式和相同高度角下白天太陽光偏振模式進行測試。 利用基于中性點及子午線的天空光偏振模式分析方法,對月光偏振模式進行了分析；月光偏振模式測試分布圖分別與理論模型、太陽光偏振模式測試圖進行對比,研究了月光偏振模式與理論模型、太陽光偏振模式的差異；分波段研究了月光偏振模式,探究了不同波段下月光偏振模式的規(guī)律。 經過對比發(fā)現(xiàn)在晴朗天空下滿月時,存在規(guī)律性的月光偏振模式,且與仿真結果基本一致,符合Rayleigh散射理論；當月亮高度角和太陽高度角相近時,其分布規(guī)律是相似的；光強值不改變天空光偏振模式分布規(guī)律以及偏振度的大小,月光偏振模式偏振度的值與相同高度角下太陽光偏振度的值大小相近；月光波長越短,其偏振模式偏振度越大；晴朗天氣下滿月夜間短波段更有利于偏振導航。
[Abstract]:In nature, many organisms use the polarization mode of sky light for navigation, which provides a reference for the study of bionics. Bionic polarization navigation has gradually become a hot spot in the field of navigation. Some achievements have been made in the study of the polarization mode of solar light during the day, but the study of the polarization mode of the moonlight has been difficult to make progress due to the dim moonlight and the lack of research methods. In order to perfect the polarization mode of moonlight and provide experimental basis for the development of bionic navigation sensor, the polarization mode of moonlight in clear weather is studied in this paper. In this paper, the basic theory of sky light scattering is explored, and the polarization characteristics of moonlight are analyzed, and the theoretical model of the polarization mode of moonlight at different moon height and azimuth is established by taking the moon as the ground plane coordinate system for observing celestial bodies. The polarization-mode testing instrument of image sky light is developed, and the polarization mode testing instrument is calibrated. The polarization mode of the twilight, the moonlight at night and the polarization mode of the sunlight at the same altitude were measured by using the image-type sky light polarization mode test instrument. The polarization mode of sky light based on neutral point and meridian is analyzed. Compared with the theoretical model and the test chart of the polarization mode of the solar light, the difference between the polarization mode of the moonlight and the theoretical model and the polarization mode of the solar light is studied. In this paper, the polarization mode of moonlight is studied, and the law of polarization mode of moonlight in different bands is studied. After comparison, it is found that there are regular moonlight polarization modes in a clear sky, which are consistent with the simulation results, and accord with the Rayleigh scattering theory, and the distribution law is similar when the moon height angle and the sun height angle are close to each other. The value of light intensity does not change the distribution of polarization mode and the degree of polarization of sky light. The value of polarization degree of moonlight polarization mode is similar to that of solar light at the same height angle, the shorter the wavelength of moonlight is, the greater the polarization degree of polarization mode is. In clear weather, the short band of full moon at night is more favorable for polarization navigation.
【學位授予單位】：大連理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：P128.4

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