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Assessment of radio observatory sites using a multi-threshold algorithm

文献类型：期刊论文

作者Yang, Hang3; Dong L(董亮)1,2; He, Lesheng3
刊名Astronomical Techniques and Instruments/天文技术与仪器(英文)
出版日期2025-07
卷号2期号:04页码:255-264
ISSN号1672-7975
DOI10.61977/ati2024062
产权排序第2完成单位
英文摘要Radio environment plays an important role in radio astronomy observations. Further analysis is needed on the time and intensity distributions of interference signals for long-term radio environment monitoring. Sample variance is an important estimate of the interference signal decision threshold. Here, we propose an improved algorithm for calculating data sample variance relying on four established statistical methods: the variance of the trimmed data,winsorized sample variance, median absolute deviation, and median of the trimmed data pairwise averaged squares method. The variance and decision threshold in the protec.ted section of the radio astronomy L-band are calculated.Among the four methods, the improved median of the trimmed data pairwise averaged squares algorithm has higher accuracy, but in a comparison of overall experimental results, the cleanliness rate of all algorithms is above 96%. In a comparison between the improved algorithm and the four methods, the cleanliness rate of the improved algorithm is above 98%, verifying its feasibility. The time-intensity interference distribution in the radio protection band is also obtained. Finally, we use comprehensive monitoring data of radio astronomy protection bands, radio interference bands,and interfered frequency bands to establish a comprehensive evaluation system for radio observatory sites, including the observable time proportion in the radio astronomy protection band, the occasional time-intensity distribution in the radio interference frequency band, and the intensity distribution of the interfered frequency band.
学科主题天文学 ; 射电与天文学 ; 电子、通信与自动控制技术
分类号P161
URL标识查看原文
资助项目Ministry of Science and Technology SKA Special Project [2020SKA0110202]; the Special Project on Building a Science and Technology Innovation Center for South and Southeast Asia-International Joint Innovation Platform in Yunnan Province: “Yunnan Sino-Malaysian International Joint Laboratory of HF-VHF Advanced Radio Astronomy Technology” [202303AP140003]; the National Natural Science Foundation of China (NSFC) Joint Fund for Astronomy (JFA) incubator program [U2031133]; the International Partnership Program Project of the International Cooperation Bureau of the Chinese Academy of Sciences: “Belt and Road” Cooperation [114A11KYSB20200001]; the Kunming Foreign (International) Cooperation Base Program: “Yunnan Observatory of the Chinese Academy of Sciences-University of Malaya Joint R&D Cooperation Base for Advanced Radio Astronomy Technology” [GHJD-2021022]; the China-Malaysia Collaborative Research on Space Remote Sensing and Radio Astronomy Observation of Space Weather at Low and Middle Latitudes under the Key Special Project of the State Key R&D Program of the Ministry of Science and Technology for International Cooperation in Science, Technology and Innovation among Governments [2022YFE0140000]; the High-precision calibration method for low-frequency radio interferometric arrays for the SKA project of the Ministry of Science and Technology [2020SKA0110300]
语种英语
资助机构Ministry of Science and Technology SKA Special Project [2020SKA0110202] ; the Special Project on Building a Science and Technology Innovation Center for South and Southeast Asia-International Joint Innovation Platform in Yunnan Province: “Yunnan Sino-Malaysian International Joint Laboratory of HF-VHF Advanced Radio Astronomy Technology” [202303AP140003] ; the National Natural Science Foundation of China (NSFC) Joint Fund for Astronomy (JFA) incubator program [U2031133] ; the International Partnership Program Project of the International Cooperation Bureau of the Chinese Academy of Sciences: “Belt and Road” Cooperation [114A11KYSB20200001] ; the Kunming Foreign (International) Cooperation Base Program: “Yunnan Observatory of the Chinese Academy of Sciences-University of Malaya Joint R&D Cooperation Base for Advanced Radio Astronomy Technology” [GHJD-2021022] ; the China-Malaysia Collaborative Research on Space Remote Sensing and Radio Astronomy Observation of Space Weather at Low and Middle Latitudes under the Key Special Project of the State Key R&D Program of the Ministry of Science and Technology for International Cooperation in Science, Technology and Innovation among Governments [2022YFE0140000] ; the High-precision calibration method for low-frequency radio interferometric arrays for the SKA project of the Ministry of Science and Technology [2020SKA0110300]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28429]  
专题云南天文台_射电天文研究组
通讯作者He, Lesheng
作者单位1.Yunnan Observatories,Chinese Academy of Sciences
2.Yunnan Province China-Malaysia HF-VHF Advance Radio Astronomy Technology International Joint Laboratory,Yunnan Observatories,Chinese Academy of Sciences;
3.Yunnan University;
推荐引用方式
GB/T 7714		 Yang, Hang,Dong L,He, Lesheng. Assessment of radio observatory sites using a multi-threshold algorithm[J]. Astronomical Techniques and Instruments/天文技术与仪器(英文),2025,2(04):255-264.
APA Yang, Hang,董亮,&He, Lesheng.(2025).Assessment of radio observatory sites using a multi-threshold algorithm.Astronomical Techniques and Instruments/天文技术与仪器(英文),2(04),255-264.
MLA Yang, Hang,et al."Assessment of radio observatory sites using a multi-threshold algorithm".Astronomical Techniques and Instruments/天文技术与仪器(英文) 2.04(2025):255-264.

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来源：云南天文台

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