| 大型射电望远镜阵列天线结构设计的考虑 |
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| 引用本文： | 胡超,施浒立.大型射电望远镜阵列天线结构设计的考虑[J].电子机械工程,2006,22(1):23-26. |
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| 作者姓名： | 胡超 施浒立 |
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| 作者单位： | 1. 杭州电子科技大学,浙江,杭州,310018;中国科学院国家天文台,北京,100012
2. 中国科学院国家天文台,北京,100012 |
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| 摘 要： | 大型射电望远镜阵列由数个规模相同的综合孔径阵组成，其中每个综合孔径阵由数百面对数周期天线构成。该阵列将对宇宙信号进行长期的探测，整个阵列能否稳定工作，取决于阵元天线（单面对数周期天线作为阵列单元）长时间稳定指向特定仰角的能力。经过对阵元及阵列整体结构的多方案比较，给出了合理的结构方案和施工方案。阵列运行结果表明，该设计成本低廉，工作可靠，具有很好的效果。
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| 关 键 词： | 射电望远镜 对数周期天线 天线阵列 天线结构设计 |
| 文章编号： | 1008-5300(2006)01-0023-04 |
| 修稿时间： | 2005年9月2日 |
Structure Design for a Large Radio Telescope Array Antenna |
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| HU Chao and SHI Hu-li.Structure Design for a Large Radio Telescope Array Antenna[J].Electro-Mechanical Engineering,2006,22(1):23-26. |
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| Authors: | HU Chao and SHI Hu-li |
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| Affiliation: | Hangzhou University of Electronics Science & Technology;National Astronomical Observatories,Chinese Academy of Sciences and National Astronomical Observatories,Chinese Academy of Sciences |
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| Abstract: | A large radio telescope array antenna is made up of several same sized synthetic-aperture arrays.Each synthetic-aperture array is composed of hundreds of LPDA(log-periodic dipole antenna).The Array will be used to detect cosmos message for long time.Whether the whole array can work stably is decided by cell antenna ability of pointing to the specific elevation for a long time stably.Several designs for cell antenna and the whole array are compared in this paper,then suitable solutions of LPDA manufacture and the array installation are given.Application results prove it is a cheap and reliable design. |
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| Keywords: | radio telescope LPDA array antenna structure design |
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