Broadband adaptive array cross-coupling compensation method

The invention discloses a broadband adaptive array cross-coupling compensation method. According to the method, the relation between two directional diagrams is set up, and the directional diagrams in an array when all array elements exist are changed into isolated directional diagrams when the signal array element exists; data of multiple angles are extracted from the directional diagrams, and it is supposed that M directions are selected; polynomials related to frequency are selected, and then polynomial functions are constructed and fitted; by calculating cross-coupling compensation matrixes on multiple frequency points, a plurality of sampling values, on the frequency, of the cross-coupling compensation matrixes are obtained; by means of a compound curve fitting method, change functions or curves of all elements of the cross-coupling compensation matrixes along with the frequency are fitted; a frequency band is divided, and then compound curve fitting is carried out on the elements ...