中文说明：简单介绍了FSK的原理及其实现过程，详尽论述了fsk调制过程，让我们对频移键控有了更加直观的了解。并且了解了在调制过程中是如何实现频谱的搬移，频率中心的迁移。以及对傅里叶变化是如何实现的，对信号的合成做了一定的介绍等。
English Description：
Brief introduction of the principle and realization of FSK, FSK modulation process are discussed in detail, let us more intuitive understanding of frequency shift keying. And learned is how to achieve the removal of the spectrum during the modulation frequency Center of the. As well as how the Fourier transform is implemented, introduced certain signal synthesis, and so on.