Signal processing for acoustic neutrino detection in water, ice and salt

The recovery of neutrino induced acoustic signals, whether it be in water, ice or salt is very challenging, as the amplitude of the signals are small, the event rate low, and there is the presence of a strong and not completely understood acoustic background. There is a need for new and sophisticated techniques, which have not traditionally been used in the area of Astroparticle Physics in order to separate the signal from this background. There exists however a mature area named Signal Processing which is extensively used in the fields of Electronic Engineering and Communications. This paper is an attempt to show how signal-processing techniques can be applied in acoustic neutrino detection.