Modal beamforming for circular acoustic vector sensor arrays

2017 ◽  
Vol 141 (5) ◽  
pp. 3703-3703
Author(s):  
Berke M. Gur
Keyword(s):  
Sensor Arrays ◽  
Acoustic Vector Sensor ◽  
Vector Sensor

scholarly journals Frequency Invariant Beamforming for a Small-Sized Bi-Cone Acoustic Vector–Sensor Array

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 661
Author(s):  
Erzheng Fang ◽  
Chenyang Gui ◽  
Desen Yang ◽  
Zhongrui Zhu
Keyword(s):  
Sensor Array ◽  
Three Dimensional ◽  
Sensor Arrays ◽  
Signal Frequency ◽  
Acoustic Vector Sensor ◽  
Mechanical Coupling ◽  
Vector Sensor ◽  
Coupling System ◽  
Simulation Results ◽  
Vector Sensor Array

In this work, we design a small-sized bi-cone acoustic vector-sensor array (BCAVSA) and propose a frequency invariant beamforming method for the BCAVSA, inspired by the Ormia ochracea’s coupling ears and harmonic nesting. First, we design a BCAVSA using several sets of cylindrical acoustic vector-sensor arrays (AVSAs), which are used as a guide to construct the constant beamwidth beamformer. Due to the mechanical coupling system of the Ormia ochracea’s two ears, the phase and amplitude differences of acoustic signals at the bilateral tympanal membranes are magnified. To obtain a virtual BCAVSA with larger interelement distances, we then extend the coupling magnified system into the BCAVSA by deriving the expression of the coupling magnified matrix for the BCAVSA and providing the selecting method of coupled parameters for fitting the underwater signal frequency. Finally, the frequency invariant beamforming method is developed to acquire the constant beamwidth pattern in the three-dimensional plane by deriving several sets of the frequency weighted coefficients for the different cylindrical AVSAs. Simulation results show that this method achieves a narrower mainlobe width compared to the original BCAVSA. This method has lower sidelobes and a narrower mainlobe width compared to the coupling magnified bi-cone pressure sensor array.

scholarly journals An upper bound for the directivity index of superdirective acoustic vector sensor arrays

2016 ◽  
Vol 140 (5) ◽  
pp. EL410-EL415 ◽  
Author(s):  
Xijing Guo ◽  
Sebastian Miron ◽  
Yixin Yang ◽  
Shi'e Yang
Keyword(s):  
Upper Bound ◽  
Sensor Arrays ◽  
Acoustic Vector Sensor ◽  
Vector Sensor

Blind Calibration for Acoustic Vector Sensor Arrays

2018 ◽  
Author(s):  
Krishnaprasad Nambur Ramamohan ◽  
Sundeep Prabhakar Chepuri ◽  
Daniel Fernandez Comesana ◽  
Graciano Carrillo Pousa ◽  
Geert Leus
Keyword(s):  
Sensor Arrays ◽  
Acoustic Vector Sensor ◽  
Vector Sensor ◽  
Blind Calibration

DOA Estimation of Coherent Signals Based on the Sparse Representation for Acoustic Vector-Sensor Arrays

2019 ◽  
Vol 39 (7) ◽  
pp. 3553-3573 ◽  
Author(s):  
Shengguo Shi ◽  
Ying Li ◽  
Desen Yang ◽  
Aifei Liu ◽  
Zhongrui Zhu
Keyword(s):  
Sparse Representation ◽  
Sensor Arrays ◽  
Doa Estimation ◽  
Coherent Signals ◽  
Acoustic Vector Sensor ◽  
Vector Sensor

Noise audit model for acoustic vector sensor arrays on an ocean glider

2004 ◽  
Vol 116 (4) ◽  
pp. 2650-2650 ◽  
Author(s):  
Michael Traweek ◽  
John Polcari ◽  
David Trivett
Keyword(s):  
Sensor Arrays ◽  
Acoustic Vector Sensor ◽  
Vector Sensor
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