Development of real‐time diagnostic system for VLBI using public communication lines
Development of real‐time diagnostic system for VLBI using public communication lines
复制标题
利用公共通信线路开发VLBI实时诊断系统
DOI：
10.1002/ecjb.1030
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
M. Morimoto
中科院分区：
文献类型：
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作者：
M. Nishio;Qinghui Liu;T. Miyazaki;N. Kawaguchi;T. Sasao;T. Omodaká;M. Morimoto
本文提出了一种利用公共通信线路对VLBI（Very Long Baseline Interferometer）设备进行实时诊断的系统，并给出了一个原型模型的诊断性能检验实验结果。在该系统中，窄带无线电波，如地球静止卫星的信标或强宇宙微波激射源的发射被用作测试输入信号，这使得有可能降低信号采样率并通过公共通信线路传输采样数据。因此，可以真实的获得诊断结果。原型模型与鹿儿岛VLBI站的6米射电望远镜和水泽VLBI站的10米射电望远镜相连，并利用卫星信标波进行了测试操作。对真实的传输数据的相关结果与VLBI常规方法的相关结果一致，证明了该系统的有效性。© 2001 Scripta Technica，Electron Comm Jpn Pt 2，84（6）：1-9，2001
In this paper, a real-time diagnostic system for VLBI (Very Long Baseline Interferometer) facilities via public communication lines is proposed, and experimental results to check its diagnostic performance are described with a prototype model. In the system, narrow-band radio waves such as beacons of geostationary satellites or emission from strong cosmic maser sources are used as test input signals, which make it possible to reduce the signal sampling rate and to transmit sampled data via public communication lines. Thus, diagnostic results can be obtained in real time. The prototype model was connected to the 6-m radio telescope at the Kagoshima VLBI station and the 10-m radio telescope at the Mizusawa VLBI station, and a test operation was conducted using beacon waves of satellites. It was found that the correlation results of the data transmitted in real time coincide with those obtained by the conventional procedure for VLBI, confirming the effectiveness of the system. © 2001 Scripta Technica, Electron Comm Jpn Pt 2, 84(6): 1–9, 2001