An Event-Based Stack For Data Transmission Through Underwater Multimodal Networks

Abstract

The DESERT Underwater framework (http://desertunderwater.dei.unipd.it/), originally designed for simulating and testing underwater acoustic networks in sea trials, has recently been extended to support real payload data transmission through underwater multimodal networks. Specifically, the new version of the framework is now able to transmit data in real time through the EvoLogics S2C low-rate and high-rate acoustic modems, the SmartPORT low-cost acoustic underwater modem prototype (AHOI) for IoT applications, as well as Ethernet, surface WiFi, and the BlueComm optical modem. The system can also be tested in the lab by employing a simulated channel, and the EvoLogics S2C DMAC Emulator (DMACE).

Low-Cost Underwater Swarm Acoustic Localization: A Review

“…USVs can also be used as a carrier for AUVs/ROVs and launch them in designated locations, e.g. the SeaML [45] from Fraunhofer CML are capable of both data collection and for deploying mini-ROVs. With a similar catamaran shape, the BATDRON [46] developed by Wroclaw University of Science and Technology is a low-cost USV system designed for bathymetric measurement, which provides similar level of measurement accuracy and less time compared to classic bathymetric missions performed on boat and pontoons.…”

“…Thus a regular recalibration is carried out for each AUV to estimate its position by a triangulation process. Simulations using DESERT Underwater simulator [69] show that a tracking error of below 5 m for a close follower AUV and 13 m for a far follower AUV can be achieved when AUVs have 54 m distance between each other during the mission. Although there have been no field experiments carried out yet with ahoi modems for swarm AUV localization, they have shown great potential and suitability for the deployment on micro and small-sized AUV swarms benefiting from their small-size, low-cost, customizable and easily reproducible characteristics [62].…”