Processing a signal representative of radiation

The invention provides a method of processing a digital noisy temporal signal yk corresponding to a time original signal xt after being conditioned by a conditioning chain, said original signal xt being representative of information on radiation from a radiation source, said radiation having an energy distribution, characterized in that it implements a state model representative of the conditioning imposed by said channel to move from the initial time signal xt digital noisy temporal signal yk, to obtain from the noisy digital signal yk, a non-noisy digital estimate signal from the time the initial signal xtL'invention further provides a system adapted to implement the aforesaid method.