MIT Radar Can See Through Walls

Engineers use radar array to penetrate concrete.
3:46 | 10/19/11

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Transcript for MIT Radar Can See Through Walls
Hi my name is Greg Sharma and today we -- going to look through solid concrete walls. We've developed a phased array radar system that can look through sound concrete walls. Our objective is to aid the urban war fighter to increase his situation awareness. Rather than using visible light to look through walls which is not very effective we instead use a microwave waved -- Of approximately ten cent -- we radiate -- very small signal. From this phase -- radar into this solid concrete wall over here. Of the radiation that we -- at the wall only point 6% of that actually gets through the wall itself. Now what little energy scatters off the humans behind the law has to then go back through the war. When it goes back to the -- it again loses 99 point 4%. Of that energy scare off the humans. And now this extremely weak signal comes back through the -- towards our radar where we receive. So what the radar does is it's virtually simulates 44 being combinations along that aperture of their -- their radar. So -- national instruments' board does is it actually controls the switching pattern of those fees and forms the continuous. Virtual -- -- 44 views which gives us this win here aperture. It always. -- -- combinations and being samples are then. Needed to use it acquired by an act gaming PC. -- into the imaging algorithms and then -- lead in the user interface that was created. Visualize that and -- -- targets behind. Our -- has made up of lots of dwindling it's it's a piece of printed circuit board. It's happens to be white and has it's cold these gold -- -- -- that are conducted. And what happens is there's that He supports cable like your cable television cable that -- to the -- that -- And it feeds a my -- signal from our transmitter. And that -- radiated outward across these Q gold plated metal trades. And that signal propagate them through free space to the wall the targets. -- for the -- receive antenna what happens that's my career anarchy comes in to the Santana. And its collective. All the way down to the back here. And -- -- coax cable where we've discriminated and analyze it digitally later this is that transmit. Chassis. Which basically sends signals that -- Those are real signals. In -- So when that witness it was hard but this is what's received. Anonymous -- it restarting itself. Surrenders juvenile signals -- because I don't through -- back. Now the radar. Does not see things as we humans He thinks this radar image as a top down view. It's the image plane is in the range away from the radar. And -- cross range across the radar so what you're seeing is actual location away from and a crops. Currently when you look at some of the the data from this radar system what you see are -- a little red -- When you have one target along we have to you'll -- to read blogs from above move around. What we would like to do in the near future is we want implemented detection algorithm. Where instead of seeing the blogs you'd -- little crosses -- squares.

This transcript has been automatically generated and may not be 100% accurate.

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