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漫反射激光测距的研究与地面试验
Alternative TitleResearch and Ground Test of Diffuse Reflective Laser Ranging
翟东升
Subtype硕士
Thesis Advisor熊耀恒
2009
Degree Grantor中国科学院研究生院(云南天文台)
Place of Conferral北京
Degree Discipline天体测量与天体力学
Keyword漫反射激光测距方程   大气湍流   大气散射   大气吸收
Abstract空间碎片的存在严重地威胁着在轨运行航天器的安全。我国是空间大国,今后的空间活动将愈来愈多,特别是我国要发展载人航天和天基信息网,为了航天活动的安全,持续地开发和利用空间资源,就必须不断发展对空间碎片的跟踪监视的新技术,增强对空间碎片环境的分析预警能力。使用激光探测技术探测空间碎片就是发展的方向之一。 本文首先对非合作目标的漫反射特性进行分析,在理论上推导出漫反射激光测距方程的一般形式,并在08年4月开展了漫反射激光测距试验。通过1.2 望远镜的漫反射激光测距地面靶板试验和数据分析,推算出对有效反射面积为2平方米 ,高度从400km 到800km 的非合作目标进行漫发射激光测距时的回波分布情况,为该项目的工程实施提供了可行性依据。并且对试验数据精度进行了分析,找出了影响试验数据精度的原因。 激光光束在大气中的传输是与大气特征有关的,如大气湍流、大气散射与吸收,而且激光测距的回波除了与距离有关外,其回波数及精度也与大气特征相关。文中对大气湍流和大气衰减作用于激光传输的影响进行了分析,理论上计算出激光束水平传输与在一定斜程下传输400km时所受大气影响的对应关系,即漫反射激光测距试验地面靶的水平距离该取多远时才能代表在一定斜程下穿过 大气层的效应,从而为漫反射激光测距试验地面靶距离的选取提出可参考的依据。
Other AbstractIn this thesis, the diffuse reflective laser ranging experiment is processed at the 1.2m telescope. First of all, analysis of the diffuse reflective characteristics of the non-cooperation target is conducted. And diffuse reflective laser ranging equation of general form is deduced analytically. The transmission of laser beam depends on features of atmosphere, such as atmosphere turbulence, scattering and absorbing and so does the number of echoes and the degree of precision. A series of experiments and theoretical analysis are done in order to calculate the echo distribution of diffuse reflective laser ranging from non-cooperation object whose height varies from 400km to 800km and effective area is 2 m2. This thesis, analytically, acquires the horizontal distance between an object in low orbit of 400km and the ground target used in diffuse reflective laser ranging, when it can represent the effect of going through 400km in atmosphere in Oblique way through the analysis of the influence of atmosphere turbulence and atmospheric attenuation, so as to give reference to determine the distance of ground target in diffuse reflective laser ranging research.
Subject Area天文学
Pages59
Language中文
Document Type学位论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7349
Collection应用天文研究组
Affiliation中国科学院云南天文台
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
翟东升. 漫反射激光测距的研究与地面试验[D]. 北京. 中国科学院研究生院(云南天文台),2009.
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