A simulation based study of the effective signal to noise ratio of broadband underwater acoustic communications between moving platforms

2014 ◽  
Vol 135 (4) ◽  
pp. 2200-2200
Author(s):  
Shrey Joshi ◽  
Paul J. Gendron
Keyword(s):  
Signal To Noise Ratio ◽  
Underwater Acoustic Communications ◽  
Signal To Noise ◽  
Acoustic Communications ◽  
Underwater Acoustic ◽  
Moving Platforms ◽  
Simulation Based ◽  
Noise Ratio ◽  
Effective Signal

Recent Trends in Underwater Acoustic Communications

2013 ◽  
Vol 47 (5) ◽  
pp. 45-50 ◽  
Author(s):  
Milica Stojanovic ◽  
Lee Freitag
Keyword(s):  
Performance Metrics ◽  
Signal To Noise Ratio ◽  
The United States ◽  
Physical Layer ◽  
Small Scale ◽  
Underwater Acoustic Communications ◽  
Signal To Noise ◽  
Acoustic Communications ◽  
Underwater Acoustic ◽  
Noise Ratio

AbstractAdvances in underwater acoustic communications technology are being enabled by more access to in-water data and an infusion of new techniques, researchers, and students. In-water data collection is being made possible by robust funding in the United States, the European Union, and other countries, typically to multiorganization consortia working on both physical and network layer research. At the physical layer, single and multicarrier modulation methods continue to be refined, with a focus on both low signal-to-noise ratio, low-rate and high signal-to-noise ratio, high-rate data links. Establishment of performance metrics for adaptive equalizers and other parts of the physical layer continue, and recent work on high-fidelity channel models that mimic the effects of small-scale ocean processes indicates that progress is being made.Research in undersea acoustic networks continues to gain momentum as well, with multiple options available for integrating acoustic propagation models with network simulation, providing common frameworks for basing network design. The combination of these recent advances, plus continued interest by maritime science and industry in wireless communications, means that the field is poised to make new commercial breakthroughs in the next several years.

Research on LIFT Technology for 3D Seismic Denoising in Coalfield

2014 ◽  
Vol 556-562 ◽  
pp. 6328-6331
Author(s):  
Su Zhen Shi ◽  
Yi Chen Zhao ◽  
Li Biao Yang ◽  
Yao Tang ◽  
Juan Li
Keyword(s):  
Signal To Noise Ratio ◽  
High Signal ◽  
3D Seismic ◽  
Signal To Noise ◽  
Denoising Method ◽  
Seismic Processing ◽  
Work Area ◽  
Noise Data ◽  
Noise Ratio ◽  
Effective Signal

The LIFT technology has applied in process of denoising to ensure the imaging precision of minor faults and structure in 3D coalfield seismic processing. The paper focused on the denoising process in two study areas where the LIFT technology is used. The separation of signal and noise is done firstly. Then denoising would be done in the noise data. The Data of weak effective signal that is from the noise data could be blended with the original effective signal to reconstruct the denoising data, so the result which has high signal-to-noise ratio and preserved amplitude is acquired. Thus the fact shows that LIFT is an effective denoising method for 3D seismic in coalfield and could be used widely in other work area.

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