A new lithology identification method based on axial amplitudemodulationsignal of drill string is proposed.
提出了一种利用钻柱轴向振动调幅信号实现岩性识别的方法。
2
In other words, pulse width modulation is a modulation technique for generating variable width pulses to represent the amplitude of an input analog signal or wave.
或者换句话说，脉宽调制是一种调制技术，为发电可变脉冲宽度为代表的幅值输入模拟信号或波。
3
The 4D means four data symbols (two bits), the PAM5 is Pulse AmplitudeModulation with five signal levels.