Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79668
Title: A triad of cardioid sensors in orthogonal orientation and spatial collocation-its spatial-matched-filter-type beam-pattern
Authors: Wong, KT 
Nnonyelu, CJ 
Wu, YI
Keywords: Acoustic arrays
Acoustic beam focusing
Acoustic beam steering
Acoustic beams
Acoustic position measurement
Acoustic signal processing
Array signal processing
Beam steering
Beams
Dipole arrays
Directional sensors
Focusing
Sonar arrays
Spatial filters
Underwater acoustic arrays
Underwater acoustic transducers
Issue Date: 2018
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on signal processing, 15 Feb. 2018, v. 66, no. 4, p. 895-906 How to cite?
Journal: IEEE transactions on signal processing 
Abstract: This paper proposes a new configuration of acoustic sensors-the collocation of three cardioid sensors in perpendicular orientation, in order to increase the mainlobe-to-sidelobe height ratio (possibly to 8). This paper will analyze such a proposed triad's "spatial matched filter" beam-pattern that is independent of the frequency/spectrum of the incident signals. Specifically, this paper will analytically derive the mainlobe's pointing error in azimuth-elevation, the mainlobe's two-dimensional beam "width," the necessary and sufficient conditions for a sidelobe to exist, the mainlobe-to-sidelobe height ratio, and the array gain. These above characteristics depend on the cardioids' "cardiodicity parameter" and on the beam's nominal "look direction."
URI: http://hdl.handle.net/10397/79668
ISSN: 1053-587X
EISSN: 1941-0476
DOI: 10.1109/TSP.2017.2773419
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