信号采样，可以是临界采样，也可以是过采样，还可以是欠采样，不同的采样导致不同的恢复效果，本代码将展示不同之处。-Signal sampling, the sampling can be critical, it can be over-sampling, can also be due to sampling, different sampling led to the recovery of the different effects, the code will show the diffe

matlab实现采样定理，包括低通，带通以及频率调制。-matlab sampling theorem, including low-pass, band-pass, and frequency modulation.

ca码的生成 产城1023 位ca码并进行采样 采样至5.714Mhz-Production city code generating ca 1023 ca sampled to a sampling code and 5.714Mhz