DEVICE FOR SPATIAL SEPARATION OF SIGNALS Russian patent published in 2020 - IPC G01S3/74 

FIELD: radio equipment.

SUBSTANCE: invention relates to radio engineering and can be used in consumer equipment for separation of signals emitted from different directions. Purpose of the proposed invention is development of a device for spatial separation of several signals with known directions to their sources. Delivered target is made by a spatial signal separation device comprising an antenna array having K antenna elements, a direction finder, a beam pattern former, a pseudoinverse matrix former, a matrix multiplier, which have interconnections in form of antenna array antenna array outputs, connected to one inputs of matrix multiplier and with directions finder inputs, outputs of which are connected to inputs of beam pattern former, having outputs connected to inputs of pseudoinverse matrix former, which outputs are connected to other inputs of matrix multiplier, having outputs to consumers, providing: antenna array receiving signals from spatially spaced sources, forming vector

where AN=[A(θ₁), A(θ₂), …, A(θ_M)] – matrix consisting of M vectors

corresponding to the directions θ_1, θ_2, …, θ_M M signals arrival, where λ is wavelength, d_k is distance from k-th (k = 1, 2 …, K) antenna element to phase center of antenna array, ϕ_k is direction to k-th (k = 1, 2 …, K) antenna element from phase center of the antenna array; finder identifying areas θ_1, θ_2, …, θ_M signal arrival; generator matrix pattern formation matrix AN=[A(θ₁), A(θ₂), …, A(θ_M)] in certain areas θ_1, θ_2, …, θ_M, where

;

pseudoinverse matrix former, pseudoinverse matrix calculation AP=[AN^HAN]^-1AN^H, where "^H" is the transposition and complex conjugation index; matrix vector multiplier estimation input signals

containing estimates of input signals s₁(t), s₂(t), …, s_M(t),

corresponding to given directions of arrival θ_1, θ_2, …, θ_M, i.e. separation of signals coming from different sources. Here aP_mk (m=1, 2, …, M, k=1, 2 …, K) are elements of the matrix AP.

EFFECT: technical result when implementing disclosed solution is creation of device for spatial separation of signals, which enables to separate incoming signals; wherein the signals have the same carrier frequency, id est, operate in one frequency band – this increases efficiency of using frequency resources, on the one hand, or divides the useful signal and interference coming to the antenna array on the other side.

1 cl, 4 dwg