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HF-VHF dual-channel multifunctional radio astronomy termi-nal system

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The high frequency-very high frequency(HF-VHF)frequency band is of significant importance in astronomical observations,with applications studying various phenomena such as space weather,solar radio emissions,planetary eruptions in the solar system,pulsars,transient sources,and reionization of the early universe.This article introduces the HF-VHF frequency band multifunctional radio astronomical terminal system based on a dual-channel high-speed acquisition board with a frequency observation range of 1-250 MHz and a sampling rate of 500 Msps(Mega samples per second).The maximum quantization bit of the system is 14 bits,with a maximum time resolution of 0.1 s and a maximum spectral resolution of 16 kHz.The system combines spectral analysis of solar radio signals and recording of time-domain data of signals interfering with long baselines,and adopts a server-client separation mode to allow remote operation with separate permissions.It is used in the China-Malaysia joint astronomy project,which can carry out single-site observation of solar radio signals as well as interferometric observation of signals from multiple sites.

HF-VHFSolar radioHigh-speed acquisitionFrequency domain analysisTime-domain recording

Kaijing Liu、Liang Dong、Huanhuan Xie、Baoxin Li、Jingzhi Zhou

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School of Information Engineering,Southwest University of Science and Technology,Mianyang 621010,China

Yunnan Observatories,Chinese Academy of Sciences,Kunming 650216,China

Yunnan Province China-Malaysia HF-VHF Advanced Radio Astronomy Technology International Joint Laboratory,Kunming 650216,China

Xi'an Research Institute of Navigation Technology,Xi'an 710068,China

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National Natural science Foundation of ChinaNational Key Research and Development Program of ChinaApplied Basic Research Program of Yunnan ProvinceBasic Research Program of Yunnan ProvinceSquare Kilometer Array(SKA)Project of the Ministry of Science and Technology of ChinaInternational Partnership Program of the Chinese Academy of SciencesKunming Municipal Foreign(International)Cooperation Base Project

U2031133119410032019FB009202301AT0703252020SKA0110202114A11KYSB20200001GHJD-2021022

2024

10.61977/ati2024011

天文研究与技术－国家天文台台刊
中国科学院国家天文台云南天文台

天文研究与技术－国家天文台台刊

影响因子：0.333
ISSN：1672-7673
年,卷(期)：2024.1(2)
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