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行星际闪烁监测仪天线结构力学性能仿真分析*

李沙1†, 耿京朝2, 颜毅华1,3,4, 武织才2, 王威1, 周志超1, 陈志军3   

  1. 1 中国科学院国家空间科学中心 太阳活动与空间天气全国重点实验室,北京 100190;
    2 中国电子科技集团第五十四研究所,石家庄 050051;
    3 中国科学院国家天文台,北京 100101;
    4 中国科学院大学,天文与空间科学学院,北京 100101
  • 收稿日期:2025-03-26 修回日期:2025-06-26
  • 通讯作者: E-mail: lisha1400@bao.ac.cn
  • 基金资助:
    *国家重点研发计划(2021YFA1600500), 中国科学院基础与交叉前沿科研先导专项(XDB0560301),国家自然科学基金项目(11903055、U1931127)资助

Antenna characteristics and structural mechanics analysis of interplanetary scintillation monitor*

LI Sha1, GENG Jingchao2, YAN Yihua1,3,4, WU Zhicai2, WANG Wei1, ZHOU Zhichao1, CHEN Zhijun3   

  1. 1. State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China;
    2. The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050051, China;
    3. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China;
    4. School of Astronomy and Space Science, University of Chinese Academy of Sciences,Beijing 100101, China
  • Received:2025-03-26 Revised:2025-06-26

摘要: 行星际闪烁监测仪通过多站式相关接收射电源的时变信号,从大视角多视点来预测太阳风和日冕物质抛射,并得出行星际太阳风密度和速度,追踪行星际日冕物质抛射位置和范围。该监测仪主站采用可动的三台抛物柱面天线,每台天线南北长140m,东西宽40m。仿真计算了抛物柱面天线增益的方向图以及仰角和环境温度不同时抛物柱面天线的面板变形值,并对无形变的增益以及有形变的增益进行了对比,可以看出天线增益有±0.5dB的差异,验证了该设计的可行性。

关键词: 行星际闪烁监测仪, 抛物柱面天线, 结构力学, 有限元

Abstract: The interplanetary scintillation(IPS) monitor receives time varying signal from radio sources through multiple stations correlation. It observes the flux of the radio sources through solar wind and coronal mass ejections from a large view angle in multiple perspectives, and the density and velocity of the interplanetary solar wind could be calculated through the observed data. The dynamic phenomena also track the position and range of the interplanetary coronal mass ejections. The main station of this monitor has three movable parabolic cylindrical antennas, each one is 140 meters long from north to south and 40 meters wide from east to west. The antenna pattern and the panel deformation values of the parabolic cylindrical antenna at different elevation angles and ambient temperatures are simulated and calculated. The variance of the gain is ±0.5dB between deformation and without deformation, which verifies the feasibility of the design.

Key words: interplanetary scintillation monitor, parabolic cylindrical antenna, structural mechanics, finite element

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