In frequently used methods, sine wave is used as carrier with amplitude modulation (am), frequencymodulation (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)。
2
Two kinds of typical wideband signal, FrequencyModulation (FM) signal and Frequency Spread signal, is analyzed qualitatively with wideband Ambiguity Function.
以宽带模糊度函数为工具定性地分析了两类典型宽带信号,即调频信号和频率分集信号。
3
Noise frequencymodulation (FM) jamming, which belongs to blanket jamming, is already become the main form of noise jamming at present, because the wideband was gained by it.