This paper proposes a method for the passive positioning of sound target based on the Hanbury and Brown-Twiss (HBT) interference that is commonly used in ultra-sensitive optical measurements. The method based on HBT interference is first theoretically analyzed to determine the relation between the coherence of the signal and the position of the target. A model of target positioning based on HBT interference in the sound field is then formulated to simulate the position of the target at different frequencies and positions, and the positioning performance of the proposed method is analyzed. Experiments were carried out to verify the feasibility and accuracy of the proposed method based on HBT interference, and the results were in good agreement with those of the simulation and positioning errors were smaller than 0.1 m. The proposed method based on HBT interference positioning is thus reliable and viable for passive positioning of the source of sound.
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