| 空间目标光谱偏振特性 |
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| 引用本文： | 李雅男,孙晓兵,毛永娜,乔延利,洪津. 空间目标光谱偏振特性[J]. 红外与激光工程, 2012, 41(1): 205-210 |
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| 作者姓名： | 李雅男 孙晓兵 毛永娜 乔延利 洪津 |
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| 作者单位： | 1.中国科学院通用光学定标与表征技术重点实验室,安徽 合肥 230031; |
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| 基金项目： | 国家863计划(2002AA731041);安徽省红外与低温等离子体重点实验室基金(2007C003018F) |
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| 摘 要： | 偏振特性及其变化反映了目标的状态信息。文中讨论了采用偏振探测的方法对空间目标探测的思路与可行性，介绍了空间目标偏振测量装置，给出了空间目标的光谱偏振观测结果，并测量了与实测目标相似的空间目标缩比模型的偏振特性，对实测结果与仿真实验结果进行比较分析，结果显示两者的偏振特性变化趋势符合的很好，验证了空间目标光谱偏振观测技术的有效性。研究表明，空间目标有其自身的偏振特性变化规律，偏振度由午夜时的5 ％增加到黎明前的23.8 %，其中太阳能电池板姿态对卫星的偏振特性影响尤为明显。说明了偏振观测是空间目标探测与识别的新方法。
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| 关 键 词： | 偏振观测 空间目标 光谱 |
Spectral polarization characteristic of space target |
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| Li Yanan,Sun Xiaobing,Mao Yongna,Qiao Yanli,Hong Jin. Spectral polarization characteristic of space target[J]. Infrared and Laser Engineering, 2012, 41(1): 205-210 |
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| Authors: | Li Yanan Sun Xiaobing Mao Yongna Qiao Yanli Hong Jin |
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| Affiliation: | 1.Key Laboratory of Optical Calibration and Characterizations,Chinese Academy of Sciences,Hefei 230031,China;2.Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;3.National Astronomical Observations,Chinese Academy of Sciences,Beijing 100012,China |
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| Abstract: | The polarization characteristics and their changes reflect the status of the targets.In this work,the concept and the feasibility of using the polarization detection to characterize space targets were discussed.Then the performance of a polarimetric device applied for space targets detection was introduced.Meanwhile,the results of polarimetric observation on space targets were given and the characteristic of scaled models which were similar to the actual targets were measured,respectively.By comparing the two results,it is demonstrated that the trends of the both polarization characteristics fit well with each other.Therefore,the validity of the polarimetric observation on space targets is confirmed.The polarization characteristics of space targets is revealed,for example,the degree of polarization will increase from 5% at midnight to 23.8% before dawn.Especially,the attitude of the solar panels plays a vital role in affecting the polarization characteristics of the satellites.It is indicated that the polarimetric observation is an innovative method applied for space targets detection and identification. |
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| Keywords: | photopolarimetric observation space target spectrum |
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