| 流动VLBI天线系统噪声温度及天线效率测量 |
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| 引用本文： | 胡国军,张继年,秦显平,刘光明.流动VLBI天线系统噪声温度及天线效率测量[J].测绘学院学报,2004,21(1):14-16,20. |
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| 作者姓名： | 胡国军 张继年 秦显平 刘光明 |
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| 作者单位： | [1]西安测绘研究所，陕西西安710054 [2]信息工程大学，河南郑州450003 |
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| 摘 要： | 我国自行研制的第一套流动VLBI系统——DCW—01型流动VLBI测量仪，目前已在国家重大科学工程“中国地壳运动观测网络”中投入使用。在流动VLBI的观测试验中，天线系统噪声温度和天线效率是观测前系统调试和检测的两项重要内容。天线系统噪声温度是衡量流动VLBI观测系统内部噪声程度的特性指标；天线效率反映了天线系统对到达天线能量的刊用率，在很多计算公式中是一个很重要的参数。因此，精确地测量它们的值是进行相关处理和计算的前提。文中结合我国流动VLBI观测站的研制与建设，介绍了流动VLBI测量仪的天线及接收机系统，并详细阐述了其天线系统噪声温度和天线效率的测量。
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| 关 键 词： | 流动VLBI 系统噪声温度 天线效率 |
The Measurement of the Antenna System Noise-Temperature and Antenna Efficiency for DCW-01 Mobile VLBI |
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| HU Guo jun ,ZHANG Ji nian ,QIN Xian ping ,LIU Guang ming.The Measurement of the Antenna System Noise-Temperature and Antenna Efficiency for DCW-01 Mobile VLBI[J].Journal of Institute of Surveying and Mapping,2004,21(1):14-16,20. |
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| Authors: | HU Guo jun ZHANG Ji nian QIN Xian ping LIU Guang ming |
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| Institution: | HU Guo jun 1,ZHANG Ji nian 2,QIN Xian ping 1,LIU Guang ming 1 |
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| Abstract: | The first mobile VLBI system in China has been successfully manufactured and used in crustal movement observation network of China at present. Antenna system noise temperature and antenna efficiency are the most important items in the system debugging and checking before the VLBI observation. Combining with the manufacture and construction of the mobile VLBI station, the paper introduces the actenna and receiver system and presents a detailed depiction on the measurement of the antenna system noise temperature and antenna efficiency. |
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| Keywords: | mobile VLBI system noise temperature antenna efficiency |
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