Performance evaluation of horizontal and vertical vector sensor arrays in shallow water environments

1998 ◽  
Vol 103 (5) ◽  
pp. 2935-2935
Author(s):  
Peter Gerstoft ◽  
Joo Thiam Goh
Keyword(s):  
Performance Evaluation ◽  
Shallow Water ◽  
Sensor Arrays ◽  
Vertical Vector ◽  
Vector Sensor

Localization for broadband source by a single vector sensor in shallow water

2015 ◽  
Vol 137 (4) ◽  
pp. 2241-2242
Author(s):  
Junjie Shi ◽  
Dajun Sun ◽  
Yunfei Lv ◽  
Yun Yu
Keyword(s):  
Shallow Water ◽  
Vector Sensor

Weighted coherent processing on sparse volumetric vector sensor arrays

2017 ◽  
Vol 142 (4) ◽  
pp. 2494-2494
Author(s):  
Brendan Nichols ◽  
James S. Martin ◽  
Christopher M. Verlinden ◽  
Karim G. Sabra
Keyword(s):  
Sensor Arrays ◽  
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.

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