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。
李沙
,
耿京朝
,
颜毅华
,
武织才
,
王威
,
周志超
,
陈志军
. 行星际闪烁监测仪天线结构力学性能仿真分析*[J]. 中国科学院大学学报, 2025
: 2025041
.
DOI: 10.7523/j.ucas.2025.041
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.
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