Nonlinear signal processing in receiving arrays

An analysis of the beam formation of receiving arrays employing signal limiting and sampling is performed. It is found that the effect of limiting and sampling with one signal present and the effect of limiting alone when more than one signal is present is to introduce new side lobes into the beam pattern that may be confused with signals. It is pointed out that by a suitable distribution of receiving transducers both of these effects can be reduced to a degree that becomes negligible and the performance of the array becomes similar to the one without the processing.