一种新的FAST有源反射器表面损伤定位方法

2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting Pub Date : 2020-07-05 DOI:10.1109/IEEECONF35879.2020.9329615

Junhui Peng, H. Cao, Decheng Wu, Zhiwei Sun, Jin Fan

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引用次数: 0

摘要

提出了一种基于焦场分布的500米口径球面射电望远镜(FAST)表面损伤定位新方法。首先，根据FAST的结构，建立了考虑下系索疲劳断裂引起的表面损伤的FAST模型。然后收集仿真得到的不同损伤位置的FFD，形成完整的FFD特征库。最后，将FAST阵列接收到的表面损伤信号与数据库进行匹配，得到损伤位置。仿真结果表明，该匹配算法能有效地估计出损伤位置。

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A Novel Method of Surface Damage Localization for FAST Active-reflector

In this paper, a novel approach of surface damage localization for the Five hundred meters Aperture Spherical radio Telescope (FAST) based on the focal-field distribution (FFD) is proposed. Firstly, according to the structure of the FAST, we model the FAST with surface damage caused by down-tied cables fatigue fractures. Then the FFD with different damage locations obtained by simulation are collected to form a full FFD feature database. Finally, the received signals of the FAST array feeds with surface damage is matched with the database to obtain the damage location. Simulation results show that the matching algorithm can effectively estimate the damage location.

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2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting

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