A method for extracting interference stripe in the background of line spectral interference

In a shallow water wave guide environment, the lofar spectrum of the sound signal radiated by a broadband moving sound source exhibits interference stripe. Obtaining stable and clear interference stripe under online spectral interference is a very meaningful work. This paper proposes a method for extracting interference stripe under the background of line spectrum interference, mainly based on radon transform and filtered back projection transform, to filter out line spectrum interference without damaging the structure of interference stripe and achieve information extraction of interference stripe. This technology provides a theoretical basis and technical support for remote passive ranging of sonar systems such as towed line arrays and side arrays.