Design and Implementation of Underwater Acoustic Communication System for Sensor Networks

Objective: To develop and validate a reliable underwater acoustic communication prototype enabling sensor network data transmission in Indian water bodies.

India faces significant challenges in monitoring the health of its water resources, including rivers, reservoirs, and coastal zones, due to limitations in reliable data transmission from underwater sensor networks. This impacts sectors such as environmental monitoring, aquaculture, dam safety, and disaster management, where timely underwater data collection is critical.

This project proposes the design and implementation of an underwater acoustic communication system tailored for sensor networks deployed in Indian aquatic environments. The solution leverages acoustic modem technology to overcome the high attenuation and multipath effects that limit radio frequency and optical communication underwater.

The working model will consist of sensor nodes equipped with low-cost hydrophones and microcontrollers, an acoustic transmitter-receiver pair, signal processing algorithms for modulation/demodulation (e.g., FSK/BPSK), and a surface gateway for data aggregation. The team will demonstrate real-time data transfer and analyze performance metrics such as bit error rate, range, and energy consumption in a controlled water tank testbed, with results validated against IS 15558-2005 standards for underwater instrumentation.

This project has strong industry and societal impact, providing scalable technology for remote aquatic monitoring, early warning systems, and smart water management. The prototype can be adapted for large-scale deployments in Indian reservoirs, harbors, and fish farms, promoting sustainable resource management and disaster resilience.