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Higher-order figure-8 sensors in a pair, skewed and collocated—Their azimuthal “spatial matched filter” beam-pattern
2020 (English)In: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, The Journal of the Acoustical Society of America, Vol. 147, no 2, p. 1195-1206Article in journal (Refereed) Published
Abstract [en]

Two figure-8 sensors, differently oriented but collocated, can facilitate azimuth- elevation two-dimensional beamforming that is invariant of the frequency spectrum of the incident signal. For such a pair of identical figure-8 sensors of any arbitrary directivity-order, their spatial matched filter beam-pattern is characterized analytically here in this paper. This paper shows that the beamformer would suffer a high pointing bias if the figure-8 sensors' directivity-order exceeds one. Other characteristics of the beam-pattern are also analytically explained herein.

Place, publisher, year, edition, pages
2020. Vol. 147, no 2, p. 1195-1206
Keywords [en]
acoustic arrays, acoustic beam steering, acoustic signal processing, array signal processing
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-44276DOI: 10.1121/10.0000579OAI: oai:DiVA.org:miun-44276DiVA, id: diva2:1637773
Available from: 2022-02-14 Created: 2022-02-14 Last updated: 2022-02-16Bibliographically approved

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Publisher's full texthttp://doi.org/10.1121/10.0000579

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Nnonyelu, Chibuzo Joseph

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