锁相技术在MYRIASEISⅡ发射电路中的应用
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摘要
频率的准确度和稳定度是发射机的一个重要性能指标。锁相技术在频率合成器中的应用 ,不仅能够获得很高的频率准确度和稳定度 ,而且能获得频率连续可调的信号源。在锁相式频率合成中 ,利用锁相环把压控振荡器的输出频率锁定在基准频率上 ,还可以利用一个基准频率通过不同形式的锁相环合成所需要的频率。因此 ,锁相频率合成技术已被广泛地运用于现代通讯设备 ,以及新型的仪器仪表中。这种频率稳定度和准确度的载波源 ,能够准确无误地进行地震数据的无线传输
The accuracy and the stability of signal frequency are very important performance indication in the transmitter.In recent years,the rapidly developed phase locked technique applied in frequency synthesizer has made the signal source be provided with high accurate,high stability and continuous tunablity of frequency.The phase locked loop locks the output frequency of VCO to the reference frequency.Meanwhile,by using a reference frquency in defferent kinds of phase locked loop,the frequency needed is obtained.Therefore,the phase locked frequency synthesizing technique has been widely applied to mordern communication,equipments and some new types of instruments and meters.The signal source can make the seismic data transmit accurately.
The accuracy and the stability of signal frequency are very important performance indication in the transmitter.In recent years,the rapidly developed phase locked technique applied in frequency synthesizer has made the signal source be provided with high accurate,high stability and continuous tunablity of frequency.The phase locked loop locks the output frequency of VCO to the reference frequency.Meanwhile,by using a reference frquency in defferent kinds of phase locked loop,the frequency needed is obtained.Therefore,the phase locked frequency synthesizing technique has been widely applied to mordern communication,equipments and some new types of instruments and meters.The signal source can make the seismic data transmit accurately.
引文
1 范希鲁主编 :模拟集成电路系统 ,中国铁道出版社 (北京 ) ,1991。
2 马春友编 :通讯电子线路 ,空军电讯工程学院 ,1989,(资料 )
2 马春友编 :通讯电子线路 ,空军电讯工程学院 ,1989,(资料 )
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