Method for quantitatively judging signal-to-noise ratio of single shot by using autocorrelation

The invention discloses a method for quantitatively judging the signal-to-noise ratio of a single shot by using autocorrelation. The method comprises the following steps: S1, selecting an autocorrelation channel data time window; s2, performing autocorrelation on data in a single-shot time window; s3, carrying out self-correlation merging, wherein each shot of self-correlation data forms one shot; and S4, qualitatively judging the single-shot signal-to-noise ratio of different construction factors at the site by calculating the result of the self-correlation data, and selecting the optimal construction factor. According to the method, whether the effective signal is stronger or the interference is stronger can be distinguished through the self-correlation similarity, and the specific method for determining the optimal excitation factor according to the comparison result can effectively guide the field construction scheme. The method belongs to the technical field of digital seismic exploration, can efficientl