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偏振风成像干涉仪多波长探测理论研究
Theoretical study of polarization atmosphere Michelson interferometer using multi-wavelength
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摘要: 简述了偏振风成像干涉仪（PAMI）探测高层大气风场的基本原理；研究得出了多波长探测时偏振风成像干涉仪干涉强度、仪器调制度与位相延迟片的延迟位相之间的理论表达式；得出了偏振风成像干涉仪的干涉强度和仪器调制度受所探测谱线波长调制的重要结论；采用计算机模拟分析了使用偏振风成像干涉仪（设计谱线为高层大气氧原子跃迁时辐射的630nm的极光谱线）探测高层大气时各目标谱线的干涉强度和仪器调制度，给出了干涉强度和仪器调制度与探测谱线波长之间的关系，得出了732nm的极光谱线不适合用作探测目标的结论．本文为高层大气风场探测理论的发展、偏振风成像干涉仪多波长探测理论和应用研究，以及风场信息反演提供了理论依据和实践指导．Abstract: The basic principle of measuring the upper atmosphere using the polarization atmosphere Michelson interferometer （PAMI） is briefly described. The relationships between the intensity and the visibility of the PAMI and the Delayed phase of the wave plate are presented. The visibility and the intensity of the PAMI are dependent on the wavelength of spectral line, showing that the 732nm line is inapplicable for measuring spectral line if the PAMI is designed specifically for the 630 nm line. The research provides a theoretical basis and practical guidance both for the theoretical study of polarization atmosphere Michelson interferometer and for the design and development of the new polarization atmosphere Michelson interferometer.
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