SAIL Results - part 5

Fourier transform

The final SAIL image captures a target with both a diffuse-scattering surface and a specular surface. A close-range photo of the target is inset. The diffuse-scattering surface appears bright, but the specular surface returns very little light to the receiver because it is reflected away at 45 degrees. The image is reasonably well focused, and the edge of the smooth metal surface (somewhat scuffed) surrounding the "circle A" is also barely visible. This image represents the first optical synthetic-aperture image of a diffuse (non-retroreflecting) object.


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