Research Article
Nonlinear Electromagnetic Inverse Scattering Imaging Based on IN-LSQR
Table 1
Proportion of nonzero elements in matrix
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| | Number of cells in target domain (Nd) | Size of | Number of nonzero elements in | Proportion of nonzero elements |
| | 20 × 20 | 16164 × 14800 | 6,480,000 | 0.02709 | | 30 × 30 | 34164 × 33300 | 30,780,000 | 0.02706 | | 40 × 40 | 59364 × 59200 | 95,040,000 | 0.02704 |
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