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(a) Experimental setup with two transmitting parabola and a ridged horn antenna as receiver. (b) Scattering target: two polyethylene cubes spaced by .
(a) Source positions from 30° to 150° step 15° and from 20° to 340° step 40°. (b) Receiver positions from 0° to 350° step 10° but with mechanical and saturation exclusions.
Cross sections of the permittivity profile obtained after inversion at . (a) Relative permittivity in plane at . (b) Relative permittivity in the plane at .
As in Fig. 3 but at .
Profile of the permittivity vs at and obtained after inversion in black line. The actual profile is plotted in blue line. (a) . (b) .
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