Sub-band aliasing sampling reconstruction method based on frequency interleaving sampling technology

The invention discloses a sub-band aliasing sampling reconstruction method based on a frequency interleaving sampling technology, and the method comprises the steps: enabling an input signal to enter M channels at the same time through a power divider, carrying out the modulation through selecting a sinusoidal signal with a proper frequency, enabling the input signal of each channel to generate aliasing of different degrees, filtering a high-frequency part after aliasing through a low-pass filter, and carrying out the modulation of a sinusoidal signal with a proper frequency; therefore, the sub-band decomposition process is realized; the filtered signal is converted into a digital signal after being sampled by an analog-to-digital converter, and after the sampling rate is improved through up-sampling and digital filtering, the digital signal is converted into a frequency domain through Fourier transform for digital processing; the frequency spectrum of each sub-band is separated through digital signal process