The invention discloses a
target signal frequency automatic optimization method for assisting direction-of-arrival positioning, and the method comprises the steps: obtaining a sound source
signal collected by an array, and constructing a target function based on the sound source
signal and a conversion matrix; constructing a first target matrix based on the first position matrix; randomly orthogonalizing the first target positions to obtain direction vectors, and optimizing the corresponding first target positions based on the direction vectors to obtain a second target matrix; generating a second position matrix based on the first target matrix and the second target matrix; calculating a step parameter corresponding to the second position matrix, generating a third position matrix based on the step parameter, and locally replacing the second position matrix based on the third position matrix; and determining an optimal conversion matrix corresponding to the second position matrix, separating the sound source signals based on the optimal conversion matrix to obtain each independent sound source
signal, and determining the independent sound source signal with the highest spectrum
peak value as a target sound source signal. According to the invention, the real sound source position can be rapidly and accurately determined.