| 摘要 |
The present invention relates to a compressive sensing-based signal processing method and device. The method comprises: according to the spectrum distribution of an input signal, determining the distribution of various signal components in a baseband spectrum after the input signal is mixed; according to different signal aliasing modes formed by the distribution of the various signal components, segmenting the baseband spectrum to form a plurality of frequency segmentations; according to the signal aliasing modes in the frequency segmentations, determining the lowest sampling frequency of the input signal, and sampling the input signal at a sampling frequency greater than the lowest sampling frequency to obtain a sampled signal; and respectively recovering corresponding signal components in various frequency segmentations of the plurality of frequency segmentations according to the sampled signal, and splicing the signal components recovered from the various frequency segmentations to complete the recovery of the input signal. The present invention can process more narrowband signals at a lower sampling rate, and can flexibly process various kinds of different frequency-domain sparse signals. |
