Comments: download file (cintal_rep)
Ref.: SiPLAB Report 02/11, SiPLAB, University of Algarve,2011.
Abstract
The Underwater Acoustic Network (UAN) project, started in 2008 with the aim to develop
and test at sea an operational network of underwater sensors for port/off-shore protection.
The fundamental idea behind UAN is that in order to obtain a sustainable gain of
performance both at the basic P2P communication level and at the network level (across
the whole infrastructure), the whole communication system should be able to adapt itself
to the physical acoustic propagation conditions at that particular time and water volume
where the experiment takes place. Within the scope of the project, a high data-rate
unidirectional P2P communication link used to transfer seizable data, e.g. images, sonar
signals, from an agent (e.g. fixed or mobile node) to a base station is also considered. We
consider the node employing a single transducer modem with limited power and computation
resources, while the base station employing the multi-hydrophone array, with data
acquisition system connected to a shore/ship lab via fibre optic cable for data processing
with no such constraints. Hence, an asymmetry both on the data
ow and on the complexity is expected, i.e. a high data-rate transmission from a node to the base station,
and a low data-rate transmission from the base station to a node and that among the
nodes in the network. The communication between the agent to the array at the base
station can be considered as a Single Input Multiple Output (SIMO) communication. In
September 2010, the UAN10 sea trial was conducted off the Pianosa island, Italy. This
report presents the detailed UAN10 experiment descriptions for P2P communications,
equipment, environmental and geometric data, as well as signal descriptions and data
analysis.