Comparative study: Flow‐induced noise on underwater acoustic pressure, particle velocity, and intensity sensors

1999 ◽  
Vol 105 (2) ◽  
pp. 1120-1121
Author(s):  
James A. McConnell ◽  
Gerald C. Lauchle
Keyword(s):  
Comparative Study ◽  
Particle Velocity ◽  
Acoustic Pressure ◽  
Underwater Acoustic ◽  
Flow Induced Noise

scholarly journals Optimal Deployment of Vector Sensor Nodes in Underwater Acoustic Sensor Networks

Sensors ◽  
2019 ◽  
Vol 19 (13) ◽  
pp. 2885 ◽  
Author(s):  
Sunhyo Kim ◽  
Jee Woong Choi
Keyword(s):  
Sensor Networks ◽  
Particle Velocity ◽  
Sensor Nodes ◽  
Acoustic Sensor ◽  
Underwater Acoustic Sensor Networks ◽  
Communication Performance ◽  
Underwater Acoustic ◽  
Acoustic Sensor Networks ◽  
Vector Sensor ◽  
Optimal Deployment

Underwater acoustic sensor networks have recently attracted considerable attention as demands on the Internet of Underwater Things (IoUT) increase. In terms of efficiency, it is important to achieve the maximum communication coverage using a limited number of sensor nodes while maintaining communication connectivity. In 2017, Kim and Choi proposed a new deployment algorithm using the communication performance surface, which is a geospatial information map representing the underwater acoustic communication performance of a targeted underwater area. In that work, each sensor node was a vertically separated hydrophone array, which measures acoustic pressure (a scalar quantity). Although an array receiver is an effective system to eliminate inter-symbol interference caused by multipath channel impulse responses in underwater communication environments, a large-scale receiver system degrades the spatial efficiency. In this paper, single-vector sensors measuring the particle velocity are used as underwater sensor nodes. A single-vector sensor can be considered to be a single-input multiple-output communication system because it measures the three directional components of particle velocity. Our simulation results show that the optimal deployment obtained using single-vector sensor nodes is more effective than that obtained using a hydrophone (three-channel vertical-pressure sensor) array.

scholarly journals Geoacoustic inversion based on both acoustic pressure and particle velocity

2006 ◽  
Vol 120 (5) ◽  
pp. 3355-3356
Author(s):  
A. Vincent van Leijen ◽  
Jean‐Pierre Hermand ◽  
Kevin B. Smith
Keyword(s):  
Particle Velocity ◽  
Acoustic Pressure ◽  
Geoacoustic Inversion
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