Temperature Distribution and Influence Mechanism on Large Reflector Antennas under Solar Radiation

被引：15
|
作者：
Wang, C. S. [1 ]
Yuan, S. [1 ]
Liu, X. [2 ]
Xu, Q. [3 ]
Wang, M. [4 ]
Zhu, M. B. [1 ]
Chen, G. D. [1 ]
Duan, Y. H. [5 ]
机构：
[1] Xidian Univ, Key Lab Elect Equipment Struct Design, Minist Educ, Xian, Shaanxi, Peoples R China
[2] Beijing Aerosp Automat Control Inst, Beijing, Peoples R China
[3] Chinese Acad Sci, Xinjiang Astron Observ, Urumqi, Peoples R China
[4] Res Inst Shaanxi Huanghe Grp Co Ltd, Xian, Shaanxi, Peoples R China
[5] CETC 39 Res Inst, Xian, Shaanxi, Peoples R China
来源：
RADIO SCIENCE | 2017年 / 52卷 / 10期
基金：
中国国家自然科学基金;
关键词：
reflector antennas; solar radiation; thermal distortion; temperature gradient; influence mechanism; SURFACE DISTORTIONS; TELESCOPE;
D O I：
10.1002/2017RS006405
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The solar impact on antenna must be lessened for the large reflector antenna operating at high frequencies to have great electromagnetic performances. Therefore, researching the temperature distribution and its influence on large reflector antenna is necessary. The variation of solar incidence angle is first calculated. Then the model is simulated by the I-DEAS software, with the temperature, thermal stress, and thermal distortion distribution through the day obtained. In view of the important influence of shadow on antenna structure, a newly proposed method makes a comprehensive description of the temperature distribution on the reflector and its influence through the day by dividing a day into three different periods. The sound discussions and beneficial summary serve as the scientific foundation for the engineers to compensate the thermal distortion and optimize the antenna structure.
引用
收藏
页码：1253 / 1260
页数：8
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