| 基于全息测量的佘山25 m射电望远镜远场分析 |
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| 引用本文： | 江永琛,王锦清,范庆元.基于全息测量的佘山25 m射电望远镜远场分析[J].中国科学院上海天文台年刊,2011(0). |
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| 作者姓名： | 江永琛 王锦清 范庆元 |
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| 作者单位： | 中国科学院上海天文台;中国科学院研究生院; |
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| 摘 要： | 首先分析了佘山25 m卡塞格伦天线结构,形变与噪声这2个因素影响下的远场进行仿真分析,理想情况比较,分析这2个因素对全息测量的影响。然后利用天线结构参数分别对天线面板表面获得了二维远场的幅度和相位分布图,并与
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| 关 键 词： | 全息 表面形变 噪声 远场 |
Far Field Analysis of Sheshan 25 m Radio Telescope Based on Holographic Measurement |
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| JIANG Yong-chen,WANG Jin-qing,FAN Qing-yuan.Far Field Analysis of Sheshan 25 m Radio Telescope Based on Holographic Measurement[J].Annals of Shanghai Observatory Academia Sinica,2011(0). |
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| Authors: | JIANG Yong-chen WANG Jin-qing FAN Qing-yuan |
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| Institution: | JIANG Yong-chen~(1,2),WANG Jin-qing~1,FAN Qing-yuan~1 (1.Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,2.Graduate School of Chinese Academy of Sciences,Bejing 100049) |
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| Abstract: | This paper first analyzes the Sheshan 25 m Cassegrain antenna's structure.Using the antenna's structure parameters,simulation analysis of far field with antenna surface deformation and noise are done respectively.And the two-dimensional far field's amplitude and phase distribution are obtained.Contract to the ideal condition,these two factors' effects on holographic measurement,which are the rationale for further research on holography can be got at last. |
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| Keywords: | holography surface distortion noise far field |
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