Phase-only weighted beam broadening method

The invention provides a phase-only weighted beam broadening method, which comprises the following steps of: S1, setting a phase broadening constant T, and setting the value range of the phase broadening constant T to be 1-10; s2, initializing a population and obtaining a phase weight function; s3, calculating adaptive values of the plurality of populations in the S2; s4, randomly selecting every two populations for gene exchange to generate a new population; s5, performing population variation operation; and S6, screening the population with the optimal fitness, calculating a corresponding phase weight, and broadening the beam by using the phase weight. According to the phase-weighted beam broadening method provided by the invention, the beam can be broadened in a high-efficiency and large-multiple manner, so that the main lobe is smoother after the beam broadening, the phase change of the adjacent radiation units is smoother, and the active standing wave of the radiation units is smaller; the method can be