Discrete Space-Time Filtering

In many scientific and technological areas, acquiring signals relating to the same stochastic process, with a multiplicity of homogeneous sensors and arranged in different spatial positions, is sometimes necessary or simply useful. For example, this is the case of the acquisition of biomedical signals, such as electroencephalogram (EEG), electrocardiogram (ECG), and tomography or of telecommunications signals such as those deriving from the antenna arrays and radars, the detection of seismic signals, the sonar, and the microphone arrays for the acquisition of acoustic signals. The phenomena measured in these applications may have different physical nature but, in any case, the array of sensors, or receivers, is made to acquire processes concerning the propagation of electromagnetic or mechanical waves coming from one or more radiation sources.