Low cost underwater acoustic localization

lOW-COST ACOuSTIC TRANSmITTER fOR uNDERWATER SEN- SOR NETWORkS

Currently, there is a lag in the proliferation of underwater sensors due to the lack of low cost acoustic transmitters. The high cost of acoustic modems and some of their characteristics, make them inappropriate for many scenarios where low power and short range communications are required. This paper presents the design and the details of a low-cost acoustic transmitter for underwater sensors....

Underwater Acoustic Localization and Packet Scheduling

In an underwater medium the sound speed is not constant, but varies with depth. This phenomenon upsets the linear dependency of the distance traveled by an acoustic wave to the time it takes for the wave to travel that distance, and therefore makes existing distance-based localization algorithms less effective in an underwater environment. This paper addresses the problems of localizing a fixed...

Array Processing: Underwater Acoustic Source Localization

Determining the Suitability of FPGAs for a Low-cost, Low-power Underwater Acoustic Modem

T Few dense underwater acoustic sensor networks (UWSN) currently exist because existing commercial acoustic modems are too expensive and power consuming. In order to enable the proliferation of UWSN, a new low-cost, low-power acoustic modem must be designed. This paper investigates the appropriate computational platform and presents the design of a complete FPGA implementation of a Frequency Sh...

LUV: The Low Cost Underwater Vehicle

In recent years underwater robotics has become a major area of research owing to the development of many diverse technologies. Autonomous underwater vehicles (AUVs) are used today for exploration, pipeline monitoring, military reconnaissance and other scientific tasks. AUVs can also be used effectively to teach principles in many disciplines of science ranging from physics to robotics. Any good...