frequency and amplitude modulation的意思|示意

We theoretically analyze and experimentally demonstrate a method of generating equal-amplitude optical comb exploiting multi-frequency phase modulation.

我们理论分析并实验验证了一种利用多频相位调制产生等振幅光梳的方法。

In frequently used methods, sine wave is used as carrier with amplitude modulation (am), frequency modulation (FM) and phase modulation (PM) implied.

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)。

We also analysed the influence of amplitude modulation and frequency (or phase ) modulation on Interferometer Direction Finder.

对三波道干涉仪测向结果不受幅度调制和频率调制（相位调制）的影响进行了数学分析。

The dependence of frequency relations on pressure and modulation amplitude is similar with other laboratories.

频率依赖于碘压和调制幅度的关系与其他研究所的结果相类似。

The present invention provides a structure in which an amplitude-modulation mode and a frequency-modulation mode are switched.

本发明提供了一种结构，其中振幅调制模式和频率调制模式被切换。

The errors are classified according to their frequency. The amplitude and phase errors of the LFM signal generators using quadrature modulation technology are mapped into baseband.

提出了一种将正交调制LFM信号产生系统的幅相误差映射到基带后，在数字域利用复系数FIR滤波器进行校正的方案。