Signal Processing, Spectral Analysis, Ante, Linear Algebra, Eigenvectors.
antenna’s response. From (23), if the number of K sources impinging on the array is less than M-1 sensors in the ULA, than the first term in (23) is singular with determinant: Equation 26 This is because has a APA* degeneracy of M-K (since A is full rank, the rank of P determines the degeneracy)