摘要
付载波频偏测量对于保证双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偏测量仪。该仪器便于携带、使用方便、精度达±10(－3)×f0＋1赫（当f0＞1千赫时）该精度满足模拟传输台网的需要。
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.
出处
《四川地震》
1997年第3期23-25,共3页
Earthquake Research in Sichuan
关键词
传输质量
付载波频偏
地貌台
遥测台网
transmission quality, the system of double frequency modulation, frequancy off setting of secondary carrier
