46
2 Voxel-Based Inversion Via Set-Theoretic Estimation
Fig. 2.19 Fastener with multisite damage. Reconstructed with 4 × 4 transmitter scan and 32 × 32
receiver scan. This is an example of layer-stripping with multifrequencies, using the stest estimator.
Noise: 1% relative magnitude error; 1 ◦ phase error. Cells of the top layer, that are marked with a
‘?’, have poorly resolved zeroes. Cells of the bottom layer, marked with a zero and shown in black,
are forced to have a zero conductivity
2 Voxel-Based Inversion Via Set-Theoretic Estimation
Fig. 2.19 Fastener with multisite damage. Reconstructed with 4 × 4 transmitter scan and 32 × 32
receiver scan. This is an example of layer-stripping with multifrequencies, using the stest estimator.
Noise: 1% relative magnitude error; 1 ◦ phase error. Cells of the top layer, that are marked with a
‘?’, have poorly resolved zeroes. Cells of the bottom layer, marked with a zero and shown in black,
are forced to have a zero conductivity