TY - JOUR
T1 - 3D Non-Synchronous Measurements With Central Reference Based on Revolution and Autorotation of Spherical Microphone Array
AU - Yu, Liang
AU - Liu, Huimin
AU - Chu, Ning
AU - Mohammad-Djafari, Ali
AU - Yang, Weihua
N1 - Publisher Copyright:
© 1994-2012 IEEE.
PY - 2023
Y1 - 2023
N2 - The non-synchronous measurement (NSM) technology has been significantly developed. NSM at the coprime position (CP-NSM) is a measurement principle in two-dimensional (2D) acoustic imaging, wherein a planar array is moved to a coprime position for measurements. However, there are certain drawbacks to the measurement principles of spherical arrays in three-dimensional (3D) acoustic imaging. A measurement principle of 3D acoustic imaging has been investigated using 3D Non-Synchronous Measurements with a Central Reference based on Revolution and Autorotation (CR-NSM). The primary contributions of this CR-NSM are as follows: (1) A measurement principle for 3D non-synchronous measurements with a central reference based on revolution and autorotation is proposed. (2) The spatial resolution is primarily determined by the revolution in CR-NSM, and the side lobe is reduced by autorotation in CR-NSM. In the simulation results, the spatial resolution is obtained using CR-NSM for good imaging at low signal-to-noise ratios (SNR). Moreover, the cross-spectral matrix (CSM) completion error is enhanced by adding the phase relations between consecutive positions. The CR-NSM algorithm was developed according to the measurement principles of 3D acoustic imaging.
AB - The non-synchronous measurement (NSM) technology has been significantly developed. NSM at the coprime position (CP-NSM) is a measurement principle in two-dimensional (2D) acoustic imaging, wherein a planar array is moved to a coprime position for measurements. However, there are certain drawbacks to the measurement principles of spherical arrays in three-dimensional (3D) acoustic imaging. A measurement principle of 3D acoustic imaging has been investigated using 3D Non-Synchronous Measurements with a Central Reference based on Revolution and Autorotation (CR-NSM). The primary contributions of this CR-NSM are as follows: (1) A measurement principle for 3D non-synchronous measurements with a central reference based on revolution and autorotation is proposed. (2) The spatial resolution is primarily determined by the revolution in CR-NSM, and the side lobe is reduced by autorotation in CR-NSM. In the simulation results, the spatial resolution is obtained using CR-NSM for good imaging at low signal-to-noise ratios (SNR). Moreover, the cross-spectral matrix (CSM) completion error is enhanced by adding the phase relations between consecutive positions. The CR-NSM algorithm was developed according to the measurement principles of 3D acoustic imaging.
KW - 3D spherical microphone array
KW - acoustic imaging
KW - cross-spectral matrix completion
KW - non-synchronous measurements
KW - sound source localization
UR - http://www.scopus.com/inward/record.url?scp=85159677418&partnerID=8YFLogxK
U2 - 10.1109/LSP.2023.3270767
DO - 10.1109/LSP.2023.3270767
M3 - 文章
AN - SCOPUS:85159677418
SN - 1070-9908
VL - 30
SP - 518
EP - 522
JO - IEEE Signal Processing Letters
JF - IEEE Signal Processing Letters
ER -