Fig. 1. Schematic of multilayer structure. The left and right ones are MSM-R and BSM-RI, respectively.

Fig. 2. Schematic of experimental setup. The stealth materials are put on the ground.

Fig. 3. Monostatic and biostatic RCS of BSM-RI. (a) Monostatic RCS and (b) biostatic RCS under the normal incidence condition.

Fig. 4. Emissivity comparison at 35 GHz and horizontal polarization: (a) simulation and (b) measurement.

Fig. 5. Emissivity comparison at 94 GHz and vertical polarization: (a) simulation and (b) measurement.

Fig. 6. Change of boundary reflectivity at vertical polarization. Original boundary is the boundary between RAM and air. New boundary is the boundary between RAM and infrared stealth layer.

Fig. 7. Sketch of scenes and corresponding 94 GHz radiometer images: (a) materials including MSM-R and MSM-I, (b) materials including BSM-RI, (c) radiometer image of (a), and (d) radiometer image of (b).

Fig. 8. Horizontal cuts of radiometer images (along the horizontal solid line in Figs. 7(c) and 7(d)).