Born Approximation Observations - Introduction to Imaging from Scattered Fields - page 81

table 6 .7 Family of First Born Approximation Reconstructions for a Cylinder with a Radius of 1 λ Illuminated by Various Incident Frequencies

Rec# 8 GHz, nBW = 0 8 GHz, nBW = 360/Rec# 5 GHz, nBW = 0 5 GHz, nBW = 360/Rec# 2 GHz, nBW = 0 2 GHz, nBW = 360/Rec#

3

4

5

6

8

Note: The target permittivity is 1.5. There are 360 receivers, a resolution of 250 × 250 on each image with increasing number of receivers going down the page. Green indicates degrees of freedom
satisied. Red indicates that the number of degrees of freedom is insuficient. Yellow indicates that the number of available degrees of freedom is marginal. NBW, noise bandwidth.