Surface Shape Detection with a Single Far-Field Intensity by Combined Amplitude and Phase Retrieval

Table 8

Recovery accuracy of the method by dual-frequency scan.

f (GHz)	0.3	0.4	0.5	0.6	0.7	0.8
NMSE of Ce (%)	0.44	0.46	0.46	0.50	0.56	0.70
RMS of δr (mm)	0.110	0.111	0.111	0.113	0.117	0.125