| 大气对532nm激光影响在漫反射激光测距中的应用 |
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| 引用本文： | 翟东升,伏红林,熊耀恒.大气对532nm激光影响在漫反射激光测距中的应用[J].天文研究与技术,2010,7(1). |
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| 作者姓名： | 翟东升 伏红林 熊耀恒 |
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| 作者单位： | 中国科学院国家天文台云南天文台,昆明,650011 |
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| 基金项目： | 国家自然科学基金杰出青年科学基金，中国科学院知识创新工程项目 |
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| 摘 要： | 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。漫反射激光测距的目标是低轨空间碎片,在一定反射截面的条件下,应用一定功率的激光进行地面靶板漫反射测距试验,以确定多少功率的激光器可实现空间碎片的漫反射测距,这时地面靶的距离选取应该具有代表性,它代表了在一定斜程下穿过整个大气层的效应。通过对大气湍流和大气衰减对激光传输的影响进行分析,理论上计算出在低轨目标为400km时,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400km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供参考依据。
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| 关 键 词： | 漫反射激光测距 大气湍流 大气衰减 |
Study of Atmospheric Effects on a 532nm Laser and Its Applications in the Laser Ranging Based on Diffuse Reflection |
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| ZHAI Dong-sheng,FU Hong-lin,XIONG Yao-heng.Study of Atmospheric Effects on a 532nm Laser and Its Applications in the Laser Ranging Based on Diffuse Reflection[J].Astronomical Research & Technology,2010,7(1). |
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| Authors: | ZHAI Dong-sheng FU Hong-lin XIONG Yao-heng |
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| Institution: | ZHAI Dong-sheng,FU Hong-lin,XIONG Yao-heng(National Astronomical Observatories/Yunnan Observatory,Chinese Academy of Sciences,Kunming 650011,China |
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| Abstract: | In tests of laser ranging based on diffuse reflection of ground targets,the selection of distances to targets must take into account influences from the atmosphere.This is because only tests based on considerations of atmospheric influences can adequately reflect the reality encountered in future applications of laser ranging based on diffuse reflection.Since the purpose is to detect low-orbit space debris,these tests use ground targets to determine the effective ranges of laser ranging for a given target c... |
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| Keywords: | Laser ranging based on diffuse reflection Atmospheric turbulence Atmospheric attenuation |
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