Table 1 Algorithm procedure solving Eq. (3).

From: Single-shot and single-sensor high/super-resolution microwave imaging based on metasurface

Input: s, A and γ

Output: ô

Initializing ô by ô = (A′A + γI)−1A′s.

DO until achieving some stop criteria

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ô = (A′A + γW)−1A′s

END DO