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>oh, hello:

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>Are you interested in learning about radar by building and testing your own imaging radar system? MIT Professional Education is offering a course in the design, fabrication, and testing of a laptop-based radar sensor capable of measuring Doppler and range and forming synthetic aperture radar (SAR) imagery.
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- Build a Small Radar System

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Check out the Walabot.     https://the-gadgeteer.com/2016/11/15/walabot-diy-review/    

I don't know how they do this,  Is it some sort of mini-phased-array radar?

                         Jim Bell