| Method | Three-line-array image | High-resolution image | ||
| Solution time/s | Iteration numbers | Solution time/s | Iteration numbers | |
| Ridge estimation iterative method | 10.23 | 12 | 10.01 | 12 |
| Spectrum correction iteration | 21.55 | 23 | 20.92 | 22 |
| Conjugate gradient method | 60.58 | 46 | 60.21 | 45 |