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Table 1 Variable description in the stage-by-stage procedure

From: Resolution enhancement for ISAR imaging via improved statistical compressive sensing

g

Subscript of the stage number

\( {\overline{N}}_g={2}^g\cdot N \)

Azimuth dimension of SR image in the gth stage

A g

SR image \( \left({\overline{N}}_g\times M\right) \)

 g

Estimation of A g (\( {\overline{N}}_g\times M \))

Ä€ g

BWE SR image \( \left({\overline{N}}_g\times M\right) \) in the gth stage

F g

Partial Fourier matrix \( \left({\overline{N}}_g\times N\right) \)