1. A communications device for separating M source signals provided by M signal sources, the communications device comprising: K antenna arrays for receiving M different summations of the M source signals, where K<M, each antenna array receiving at least one different summation of the M source signals, with at least one of the antenna arrays receiving at least two different summations of the M source signals; a receiver connected to said K antenna arrays for receiving the M different summations of the M source signals; and a signal separation processor connected to said receiver and forming a hybrid separation matrix as a function of the following time differences between receipt of the M different summations of the M source signals by said K antenna arrays, a spatial fourth order cumulant matrix pencil based upon the time differences, a spatial correlation matrix based upon the spatial fourth order cumulant matrix, and steering vectors of the M different summations of the M source signals based upon the spatial correlation matrix; and said signal separation processor multiplying the hybrid separation matrix by a time series matrix representation of the M different summations of the M source signals for separating the M source signals.