蔡明辉,马凌,董晓玉,等. 射电天文台址周边干扰电磁兼容分析[J]. 电波科学学报,xxxx,x(x): x-xx. DOI: 10.12265/j.cjors.2024025
      引用本文: 蔡明辉,马凌,董晓玉,等. 射电天文台址周边干扰电磁兼容分析[J]. 电波科学学报,xxxx,x(x): x-xx. DOI: 10.12265/j.cjors.2024025
      CAI M H, MA L, DONG X Y, et al. Analysis of electromagnetic compatibility of interference around the radio astronomical observatory site[J]. Chinese journal of radio science,xxxx,x(x): x-xx. (in Chinese). DOI: 10.12265/j.cjors.2024025
      Citation: CAI M H, MA L, DONG X Y, et al. Analysis of electromagnetic compatibility of interference around the radio astronomical observatory site[J]. Chinese journal of radio science,xxxx,x(x): x-xx. (in Chinese). DOI: 10.12265/j.cjors.2024025

      射电天文台址周边干扰电磁兼容分析

      Analysis of electromagnetic compatibility of interference around the radio astronomical observatory site

      • 摘要: 为研究射电天文台址周边固定、移动干扰源对射电天文观测的影响,细化射电天文业务与其他业务间的电磁兼容(electromagnetic compatibility, EMC)分析,提出一种基于干扰源状态和辐射量级的EMC分析方法。首先,判断干扰源状态,依据其类型采集电磁干扰评估区域,划分区域得到各点/网格至望远镜的相对地形;其次,计算射电天文天线指向干扰源的增益并根据地形特征选用适宜电波传播模型预测电波传输损耗,进而预估干扰到达望远镜的功率大小;最后结合干扰电平限值、望远镜的指向,确定该干扰源对望远镜的干扰影响。在此基础上,运用该方法对移动状态干扰源和固定状态干扰进行EMC分析与评估,为台址周边电磁干扰协调及干扰兼容性分析提供技术支撑。

         

        Abstract: In order to analyze the impact of interference sources around radio astronomical observatory site on radio astronomical observations, an electromagnetic compatibility analysis method based on the state of interference sources and the magnitude of radiation is proposed. Firstly, the state of the interference source is determined, and the electromagnetic interference evaluation area is collected according to its type, and the relative terrain of each point from the grid to the telescope is obtained by dividing the area. Secondly, the gain of the radio astronomy antenna pointing to the interference source is combined with the selection of suitable radio wave propagation model from the terrain characteristics to predict the radio wave transmission loss and calculate the power of interference reaching the telescope. Finally, the interference effect of the interference source on the telescope is determined by combining the interference level limit and the direction of the telescope. On this basis, the method is applied to the electromagnetic compatibility analysis and evaluation of the moving state interference source and the fixed state interference source, which provides technical support for the electromagnetic interference coordination and interference compatibility analysis around the radio astronomical observatory site.

         

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