De-noising of experimental signals from pyroelectric sensors by a source separation method

The aim of this work is to de-noise experimental signals from pyroelectric sensors. Its originality lies in the use of a double pyroelectric sensor especially designed to receive an instantaneous linear mixing of signals. The centre of the sensor receive mainly the signal, its periphery picks up mainly noise. The signal is processed with a separation source method enabling in this way to exploit the possibilities of this new device. The setting up of such a device has never been done previously neither in the view of experimentation nor in the view of information processing.