Figure 2
From: RFI suppression in SAR based on filtering interpretation of SSA and fast implementation
Time domain signal waveforms and corresponding normalized power specturms, in due order of Chirp signal, Chirp and sinusoidal mixed signal, and the reconstructed signals by the ED method, the Notch filtering method, the Column-Sampling approximation, the Nyström method with 57 sampling columns and with 115 sampling columns, respectively.