Images captured by the MIT-developed radar (Image: MIT)
One of the through-wall experimental setups. (Photo: MIT)
Prototype of the antenna element used (Photo: MIT)
Lincoln Laboratory researchers Gregory Charvat, background, and John Peabody, foreground, stand before the solid concrete wall through which they successfully detected and captured human movement. (Photo: Melanie Gonick)
The front of the phased array radar system that sends and receives signals of movement behind solid concrete walls (Photo: MIT)
The MIT radar, seen here from the back, can see through concrete walls up to eight inches thick (Photo: MIT)
A group of MIT researchers has developed a radar that provides a video of what is happening behind a concrete wall. Just like any other radar, the device emits radio waves that bounce off objects and analyzes the return signal. Dr. Gregory Charvat and his colleagues from MIT's Lincoln Laboratory estimate that penetrating an 8-inch thick concrete wall is possible from a maximum distance of approximately 60 feet (18,3 m). The 99.9975 percent of the signal that returns to the radar after bouncing off the wall is disregarded. The remaining part that made it through the wall and back is amplified and used to generate a real-time, 10.8 frames per second visualization of the targets on the other side.
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