Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/161189
Title: Higher-order figure-8 microphones/hydrophones collocated as a perpendicular triad-their "spatial-matched-filter" beam steering
Authors: Du, Sandy Shiyu
Wong, Thomas Kainam
Song, Yang
Nnonyelu, Chibuzo Joseph
Wu, Ivan Yue
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2022
Source: Du, S. S., Wong, T. K., Song, Y., Nnonyelu, C. J. & Wu, I. Y. (2022). Higher-order figure-8 microphones/hydrophones collocated as a perpendicular triad-their "spatial-matched-filter" beam steering. Journal of the Acoustical Society of America, 151(2), 1158-1170. https://dx.doi.org/10.1121/10.0009312
Journal: Journal of the Acoustical Society of America
Abstract: Directional sensors, if collocated but perpendicularly oriented among themselves, would facilitate signal processing to uncouple the azimuth-polar direction from the time-frequency dimension-in addition to the physical advantage of spatial compactness. One such acoustical sensing unit is the well-known "tri-axial velocity sensor" (also known as the "gradient sensor," the "velocity-sensor triad," the "acoustic vector sensor," and the "vector hydrophone"), which comprises three identical figure-8 sensors of the first directivity-order, collocated spatially but oriented perpendicularly of each other. The directivity of the figure-8 sensors is hypothetically raised to a higher order in this analytical investigation with an innocent hope to sharpen the overall triad's directionality and steerability. Against this wishful aspiration, this paper rigorously analyzes how the directivity-order would affect the triad's "spatial-matched-filter" beam's directional steering capability, revealing which directivity-order(s) would allow the beam-pattern of full maneuverability toward any azimuthal direction and which directivity-order(s) cannot.
URI: https://hdl.handle.net/10356/161189
ISSN: 0001-4966
DOI: 10.1121/10.0009312
Schools: School of Electrical and Electronic Engineering 
Rights: © 2022 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The article appeared in Du, S. S., Wong, T. K., Song, Y., Nnonyelu, C. J. & Wu, I. Y. (2022). Higher-order figure-8 microphones/hydrophones collocated as a perpendicular triad-their "spatial-matched-filter" beam steering. Journal of the Acoustical Society of America, 151(2), 1158-1170 and can be found at http://asa.scitation.org/doi/10.1121/10.0009312.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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