High-resolution vertical array broadband matching positioning method

The invention relates to the technical field of underwater target acoustic positioning, in particular to a high-resolution vertical array broadband matching positioning method, which utilizes a parabolic equation model to calculate a single-step recursion sound field propagation matrix and obtains different-distance sound source-receiver system propagation matrixes through matrix multiplication. And according to the sound source depth search range and the vertical array element position, extracting the corresponding position coefficient of the system transfer matrix to form a data copy matrix. Then, the copy transfer matrix is processed, a filtering matrix group is formed by using a least square estimation method and adding a diagonal load factor, finally, a vertical array receiving signal is processed by using a broadband filtering matrix group, energy normalization is performed on different distance processing results, and a broadband distance-depth ambiguity map is formed. According to the method, the dept