基于等效风场试验的QTT台址风场分布调控技术方案初探
Preliminary study of regulation technology of wind field distribution on QTT site based on test of equivalent wind field
查看参考文献16篇
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文摘
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针对高频段大口径全向可动射电望远镜QTT对电性能的高要求,必须降低风扰动对天线的影响.本文分析了QTT台址地形地貌以及风场分布的特点,提出了一种主动降低天线所在区域风速的QTT台址风场分布调控技术方案,进一步搭建了用于QTT台址风场分布调控微缩模型的等效风场试验,通过试验数据分析,确定了QTT风场分布调控技术方案的可行性,并初步给出了经风场调控后,风速显著降低的区域范围以及风速降低的幅度,为QTT台址风场分布的调控提供了技术依据,从而可大大增加射电望远镜的有效观测时间. |
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其他语种文摘
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The effect of wind gust on the large reflector antenna is one of the main factors that can affect the antenna performance and therefore, this effect must be minimized to meet the strict performance requirement in the world largest steerable telescope, which is QiTai Telescope (QTT). In this paper, the characteristics of the topography as well as the wind distribution around QTT site have been analyzed and consequently, a technology for improving the wind distribution in an active way has been proposed. Additionally, an equivalent wind distribution test rig for the proposed technology has been built in the lab and the corresponding experiment has been carried out. The experimental data indicated that the proposed technology was a promising tool for regulating the wind distribution for the large reflector antenna and it was found that the proposed technology can significantly reduce the wind speed as well as the wind impact range after the wind regulation has been given in the test. The results in this paper has provided a solid foundation for the regulation of the wind distribution of the QTT site. |
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来源
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中国科学. 物理学
, 力学, 天文学,2019,49(9):099515 【核心库】
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DOI
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10.1360/SSPMA2018-00422
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关键词
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射电望远镜
;
反射面天线
;
风场分布
;
风场调控
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地址
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1.
西安电子科技大学, 电子装备结构设计教育部重点实验室, 西安, 710071
2.
中国科学院新疆天文台, 乌鲁木齐, 830011
3.
中国电子科技集团公司第五十四研究所, 石家庄, 050081
4.
中国电子科技集团公司第三十九研究所, 西安, 710065
5.
Department of Mechanical Engineering,University of Chester, UK, Chester, CH1 4BJ
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1674-7275 |
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学科
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天文学 |
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基金
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国家973计划
;
陕西省自然科学基金
;
天山创新团队计划
;
国家自然科学基金
;
中国科学院西部之光人才培养计划
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文献收藏号
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CSCD:6579483
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