Fig. 6.

Profiles of the reconstruction signal using noisy measurements; (a) bar plot showing average signal values for the 3 objects at different noise levels (shown on x-axis), (b) reconstructed signal profiles for SNR values −2.9, −10.6 and −14.7 dB, as well as the true value (gray solid curve) for the 3 objects across the dotted line segment shown in Fig. 2(a). The frequency set was f = [0.5,0.7,…,5.3,5.5] MHz in all cases.