| 付载波频偏的测量及其在遥测台网中的应用 |
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| 引用本文： | 徐世林,张绍昌.付载波频偏的测量及其在遥测台网中的应用[J].四川地震,1997(3):23-25. |
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| 作者姓名： | 徐世林 张绍昌 |
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| 作者单位： | 四川省地震局 |
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| 摘 要： | 付载波频偏测量对于保证调频系统传输质量具有重要的意义。本文介绍了我们设计制作的付载波频编测量仪。该仪器便于携带、使用方便、精度送±１０＾－３＊ｆ０＋１赫该精度满足模拟传输台网的需要。
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| 关 键 词： | 传输质量 付载波频偏 地貌台 遥测台网 |
MEASURING FREQUENCY OFFSETTING OF SECONDARY CARRIER AND ITS APPLTCATION IN TELEMETRIC SEISMIC NETWORK |
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| Xu Shilin ,Zhang Shaochang,Zhai Yingwu,Luo Xingfu, Wan Zhongliang.MEASURING FREQUENCY OFFSETTING OF SECONDARY CARRIER AND ITS APPLTCATION IN TELEMETRIC SEISMIC NETWORK[J].Earthquake Research in Sichuan,1997(3):23-25. |
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| Authors: | Xu Shilin Zhang Shaochang Zhai Yingwu Luo Xingfu Wan Zhongliang |
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| Institution: | Seismological Bureau of Sichuan Province |
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| Abstract: | Measuring frequency offsetting of secondary carrier is important for the telemetric seismic network to ensure transmission quality. A new gauge which measure the frequency offsetting of secondary carrier is produced. The gauge is a POrtable one and used easily. The degree of accuracy is up to one thousandth (f0 + 1) hertz (when f0 is greater than one kilohertz). The gauge is satis fied for the telemetrlc seismic network of model transmission. |
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| Keywords: | transmission quality the system of double frequency modulation frequancy off setting of secondary carrier |
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