Multi-beam synthetic aperture sonar high-resolution imaging method based on deconvolution

The invention belongs to the technical field of measurement, and relates to a multi-beam synthetic aperture sonar high-resolution imaging method based on deconvolution. The method comprises the following steps: step (1), virtually synthesizing a large-aperture array through sailing of a two-dimensional array in a track direction, and processing through a synthetic aperture algorithm to obtain a plurality of two-dimensional sonar complex images; (2) performing conventional beam forming output on the one-dimensional virtual linear array structure by using the synthetic aperture sonar complex image to obtain a three-dimensional multi-beam synthetic aperture sonar image; (3) calculating a system point spread function according to the one-dimensional virtual linear array structure; and step (4), in combination with three-dimensional multi-beam synthetic aperture sonar image output and a system point spread function, by using an R-L algorithm based on an extrapolation vector and an acceleration index, obtaining a m