Compressed Sensing Reconstruction of Radar Echo Signal Based on Fractional Fourier Transform and Improved Fast Iterative Shrinkage-Thresholding Algorithm

Figure 9

Fractional spectrum of reconstructed signals for different algorithms: (a) IFISTA; (b) FISTA; (c) CoSaMP; (d) StOMP; (e) ROMP.

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(b)

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(e)