A high-resolution sound source positioning method and device based on a circular ring coprime array and a storage medium

By designing a coprime ring-shaped microphone array with concentricity and common radius and using the LASSO sparse optimization algorithm, a virtual array was constructed, which solved the problems of omnidirectional coverage and high-resolution positioning of the ring-shaped coprime array, and achieved low-cost and high-precision sound source positioning.

CN122386237APending Publication Date: 2026-07-14HAINAN VOCATIONAL COLLEGE OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HAINAN VOCATIONAL COLLEGE OF SCI & TECH
Filing Date
2026-05-29
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In existing technologies, research on coprime arrays has mostly focused on coprime linear arrays or planar coprime arrays, which are not applicable to ring coprime arrays. This makes it difficult to balance low cost and high resolution in ring array applications that require omnidirectional uniform coverage.

Method used

Design a coprime ring-shaped microphone array with concentricity and common radius. By constructing a virtual array and utilizing the coprime integer property to generate an extended aperture, and combining the LASSO sparse optimization algorithm to solve the deconvolution problem, high-resolution sound source localization is achieved.

Benefits of technology

Under low-cost hardware conditions, it achieves omnidirectional uniform coverage and high-precision sound source localization, breaking through the Rayleigh limit, improving spatial resolution and reducing hardware costs.

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Abstract

The application provides a high-resolution sound source positioning method and device based on a circular ring coprime array and a storage medium. The method comprises: acquiring sound signals collected by a circular ring coprime microphone array; the circular ring coprime microphone array comprises a first sub-ring and a second sub-ring, and the first sub-ring and the second sub-ring have the same center and radius; determining the positions of physical array elements of the first sub-ring and the second sub-ring, constructing a virtual array based on the position vector difference of the physical array elements; generating a covariance matrix of a physical array received signal according to the sound signals, performing a vectorization operation on the covariance matrix, and constructing an equivalent virtual domain received signal model of the virtual array; based on an equivalent source assumption, constructing a virtual field energy propagation model of the virtual array, and determining the sound source position by solving a deconvolution problem. The application can achieve high-precision sound source positioning under low-cost conditions.
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