Research on topology optimization of HBT interferometric sound source localization technology

The sensor array topology applied to the Hanbury Brown-Twiss (HBT) interference space passive positioning method is studied and optimizes the sensor array structure in this paper, accurate positioning of target sound source is achieved. Based on theory and simulation, the influence of array parameters on various topological structures is analyzed, the designed topology is verified by the acoustic source location experiment in the air. The results show that when the array element spacing is in the range of 20cm~100cm and the array spacing is 7.5m, the optimal topological structure is double five-element array.The experimental results are consistent with the simulation resultsand indicate that the target with 56.5meters distance from sensor array (Array elements spacing of 1 meter) is accurately positioned and the error is lower than 0.3m.