Synthetic Aperture Radar -- Anybody feeling adventurous?

[Pangloss]

Featured today on Slashdot. Here's a link to the actual site:

 

http://www.mit.edu/~gr20603/Dr.%20Gregory%20L.%20Charvat%20Projects/$240%20High%20Res%20Rail%20SAR.html

 

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High-resolution X-band rail SAR developed for $240

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•Built in my garage and basement

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•Built from surplus microwave components

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•Point-to-point wiring and other construction techniques

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•Utilizes a Geni garage door opener screw-drive for a linear rail

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•Surplus cordless drill planetary gear set transmission coupling

[Cap'n Refsmmat]

Holy cow. I know what I'm doing next summer

[skyhook]

can I know what is it used for ? or what is this device ? Just curious, but it is most likely out of my ability to build one.