Fig. 13From: RANSAC algorithm for instantaneous frequency estimation and reconstruction of frequency-modulated undersampled signalsTwo-component cubic phase signal, STFTs (window with 160 samples), and IF estimates (thick line—estimates, dashed lines—true IFs) for K/N=6% of available samples: a, b Components with different amplitudes and separable in the TF plane; c, d Components with different amplitudes with IFs intersecting in the TF plane; e, f Components with same amplitudes and separable in the TF plane; g, h Components with same amplitudes with IFs intersecting in the TF planeBack to article page