角度调制

1
[电子] angle modulation
两种调制方式都表现为载波信号的瞬时相位受到调变, 故统称为角度调制( angle modulation) , 简称调角 [ 3] 。
2
[电子] angular modulation
ECG调制不能与其它一些类型管电流调制相组合．如角度调制(angular modulation)。虽然在心脏CT检查中可能使用Z轴调制。

短语

1
信号经过角度调制后，频谱结构将发生变化，频谱分析是处理信号的重要步骤和必要的保证。
The signal, after the Angle modulation, would change in its spectral structure. And the analysis on its frequency spectrum is an important and necessary step for signal processing.
2
常用的调制方式使用正弦波作为载波并对其进行幅度调制(AM)和角度调制即调频(FM)或调相(PM)。
In frequently used methods, sine wave is used as carrier with amplitude modulation (am), frequency modulation (FM) and phase modulation (PM) implied.
3
因此，在调制式旋转导向工具中，就必须设置一个不受钻柱影响的、可以自动保持和调整工具面角度的稳定平台。
So, it is necessary to have a stabilized platform in the tool to obtain steady angle adjustable and independent to the rotation of drilling string.

点击反馈