Figure 5From: Sparse multidimensional modal analysis using a multigrid dictionary refinementComparison between 2D-ESPRIT and the proposed method with SNR 1 = 20 dB. (○) Frequencies of simulated 2-D modes; (•) Frequencies of estimated 2-D modes; (⋄) The diagonals of the diamonds represent the 2-D damping factors.Back to article page