Acoustic source localization based on acoustic leaky-wave antenna with heterogeneous structure.

Area of Science:

• Acoustics
• Antenna Engineering
• Signal Processing

Background:

• Traditional acoustic leaky-wave antennas (LWAs) have limitations in directivity and precision for acoustic source localization.
• Heterogeneous structures offer potential for enhanced antenna performance.

Purpose of the Study:

• To propose and demonstrate a heterogeneous acoustic leaky-wave antenna (LWA).
• To achieve spatial directional radiation and high-precision acoustic source localization using the proposed LWA.

Main Methods:

• Design and fabrication of a novel heterogeneous acoustic leaky-wave antenna.
• Experimental validation of the antenna's radiating and receiving modes.
• Analysis of frequency-scanning and directional frequency characteristics.

Main Results:

• The proposed LWA exhibits peculiar frequency-scanning characteristics for directional sound radiation.
• The antenna demonstrates explicit directional frequency characteristics for spatial acoustic source localization.
• The heterogeneous LWA shows sharper directivity compared to traditional acoustic LWAs.

Conclusions:

• The heterogeneous acoustic LWA effectively achieves both directional radiation and precise source localization.
• The antenna's design offers significant improvements in directivity for acoustic applications.
• This technology holds potential for high-precision acoustic source localization systems.