Simulation of UWSNs performance evaluation

An extremely influential phenomenon in Underwater Sensor Networks shallow areas is the multipath effect. The transmission in underwater is being applied in depth areas up to 200 m. The receiving nodes receive the signal both from the direct path as well as from the other paths formed as result of the sea surface and bottom reflections. Losses from the surface reflections will increase if the surface roughness increases or, in other words, if the wind speed blowing in the surface increases. On the other hand, losses introduced from the bottom reflections will depend from the material composition. The total delay increases for more reflections as the signal that propagates from a longer path takes more time to reach the receiver when compared to the signal from the direct path. If we want to estimate the communication ability of acoustic channel, we need to consider the different materials that build the bottom of ocean and the reflection and dispersion of the signal during transmission in such links. © 2020, World Academy of Research in Science and Engineering. All rights reserved.