Automated Measurement of Ambient Electromagnetic Noise

Abstract

There are three fundamental methods of communicating underwater; optics, acoustics and radio frequency electromagnetic waves. This project has focused on electromagnetic waves as they can penetrate the air/ water interface. As electromagnetic waves penetrate the air/ water interface, the noise under water is the same as that in the air, albeit attenuated. The goal of this project was to develop an efficient system for the continual measurement and analysis of (region specific) ambient EM noise. The analysis of this information will help develop an understanding of long-term diurnal and seasonal trends in order to optimise communication systems.