32results about How to "Impulse noise suppression" patented technology

The application relates to a high-resolution processing method of borehole radar data based on mixed time-frequency analysis, which comprises the following steps: constructing discrete frequencies based on the scale resolution of borehole radar data; performing Hilbert transform on the borehole radar data to generate an analytical signal; filtering the signal, reconstructing the signal, and then obtaining weighted energy of different frequency bands, and finally outputting data processed by high-resolution processing. The application realizes dynamic weighting through low-frequency and high-frequency weighting factors, flexibly enhances or suppresses low-frequency / high-frequency components; through envelope normalization, pulse noise is suppressed, and the signal-to-noise ratio is improved; through conjugate symmetric padding, the original phase information is preserved when filtering in the frequency domain, signal distortion is avoided, and the time positioning accuracy can be maintained in time-frequency analysis; through different frequency band energy weighting processing, high and low frequency joint analysis is realized, the high and low frequencies are simultaneously widened, and high-resolution amplitude-preserving processing is realized.