Exploring parabolic equation models for improved underwater network simulations

Researchers often use simulators to evaluate protocols developed for underwater networked systems. However, the underwater communication channel is complex and physical layer models used in these simulation tools are often simplified. This can lead to inaccuracies in performance results. In this paper, we explore the use of a parabolic equation (PE) model known as Monterey-Miami (MMPE) for integration into the physical layer of an existing underwater network simulator known as Aqua-Sim. PE models are used to consider more realistic environmental effects on signal properties and could help generate more accurate network simulations. We discuss our channel framework for Aqua-Sim and the challenges associated with integrating complex models such as MMPE. We then compare the transmission loss and network performance results of the MMPE model to that of existing attenuation models used in underwater network simulators.