HF-VHF dual-channel multifunctional radio astronomy terminal system  

作　　者：Kaijing Liu Liang Dong Huanhuan Xie Baoxin Li Jingzhi Zhou 

机构地区：[1]School of Information Engineering,Southwest University of Science and Technology,Mianyang 621010,China [2]Yunnan Observatories,Chinese Academy of Sciences,Kunming 650216,China [3]Xi’an Research Institute of Navigation Technology,Xi’an 710068,China [4]Yunnan Province China-Malaysia HF-VHF Advanced Radio Astronomy Technology International Joint Laboratory,Kunming 650216,China

出　　处：《Astronomical Techniques and Instruments》2024年第2期140-149,共10页天文技术与仪器（英文）

基　　金：supported by National Natural Science Foundation of China(U2031133);National Key Research and Development Program of China(11941003);Applied Basic Research Program of Yunnan Province(2019FB009);Basic Research Program of Yunnan Province(202301AT070325);Square Kilometer Array(SKA)Project of the Ministry of Science and Technology of China(2020SKA0110202);International Partnership Program of the Chinese Academy of Sciences(114A11KYSB20200001);Kunming Municipal Foreign(International)Cooperation Base Project(GHJD-2021022).

摘　　要：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.

关 键 词：HF-VHF Solar radio High-speed acquisition Frequency domain analysis Time-domain recording. 

分 类 号：P16[天文地球—天文学]