Gives an analysis on the non linearity in frequencymodulation 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。
2
The features of pseudo code PM-carrier FM combined signal include the pseudo code and the modulationfrequency.
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。
3
Frequencymodulation(FM): the form of modulation in which the frequency of the carrier is varied in accordance with the instantaneous value of the modulating signal.