07-06-2012, 12:51 PM
Underwater Communication
Under water communication.ppt (Size: 1.04 MB / Downloads: 28)
Introduction
Underwater communication is a technique of sending and receiving message below water
Why is Underwater Communication Important
Naval defence (submarines)
Ocean exploration
Understanding natural disasters (tsunami)
Traditional approach for ocean-bottom monitoring
Real time monitoring is not possible.
No interaction b/w onshore control systems and the monitoring instruments.
failures or misconfigurations may occur
Limited storage capacity
Challenges
Battery Power is limited
Limited available bandwidth
Channel characteristics
UW sensors are prone to failures because of fouling, corrosion, etc
mobility
The ocean can be as deep as 10 km
SONAR
SOund Navigation And Ranging
Two types of technology:
Active SONAR
Passive SONAR
Applications of Underwater Communication
Seismic monitoring.
Pollution monitoring
Ocean currents monitoring
Equipment monitoring and control
Autonomous Underwater Vehicles (AUV)
