...，轻敲模式下的动 态AFM又可以细分为：幅值调制（Amplitude modulation AM）原子力显微镜、 频率调制（Frequency modulation FM）原子力显微镜和相位调制（Phase modulation PM）原子力显微镜。
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frequency modulation fm radio fuze 调频无线电引信
FM Frequency Modulation 调频 ; 调频广播 ; 频率调制
Frequency modulation in Fm Radio 调频收音机中作调频用
FM-Frequency Modulation 展现出更进步的调频
Gives an analysis on the non linearity in frequency modulation when a varactor modulates directly in a FM ranging fuze, and shows its influence on the precision of ranging.
分析了调频定距引信中采用变容二极管直接调频时调制的非线性及其对定距精度的影响。
The features of pseudo code PM-carrier FM combined signal include the pseudo code and the modulation frequency.
伪码调相-载波调频复合信号的识别特征包括伪码特征和频率调制特征。
Frequency modulation(FM): the form of modulation in which the frequency of the carrier is varied in accordance with the instantaneous value of the modulating signal.
频率调制：载波的频率依照调校讯号的瞬时值而改变的一种调制。
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