Patent ID: 8299955

Claim:
A method for filtering noise using a covariance matrix Γ of the noise, said method comprising at least the following steps: receiving signals x i by a radar having N antenna sub-arrays, wherein each sub array receives a signal x i ; computing coefficients M ij of a matrix M, i and j varying from 1 to N, on the basis of the noise covariance matrix Γ, of a weighting vector w r representing a desired antenna pattern on reception in a clean environment, and of n c constraints for preserving the shape of this antenna pattern, said constraints being represented by a matrix C of dimension N×n c and by a vector f of dimension n c , the matrix M being equal to: w r w r H · w r · f H · ( C H · Γ - 1 · C ) - 1 · C H · Γ - 1 calculating using a computer processor the product of the matrix M times the vector x received formed of the signals received x i , the resulting vector being formed of the N filtered signals x i ′.