![]() To test the system, Mostofi and her lab constructed a tall, square enclosure out of brick on the UC Santa Barbara campus. We wanted to see if we could give X-ray vision to unmanned vehicles with only Wi-Fi signals.” “We basically wanted to see if we can see behind walls with Wi-Fi signals.”Īnd if that doesn’t sound fantastic enough, Mostofi decided to throw some robots into the mix. “Our first interest was X-ray vision with Wi-Fi,” said Mostofi. They lose energy as they pass through objects, like light through a lampshade, and they can bounce off of objects, like light off a mirror. If you’ve ever tried to connect to the internet when there’s distance and walls between you and your router, you know that Wi-Fi signals are affected by the environment. “Can these signals be used not just for communication but for sensing the environment? We started looking at this problem about nine years ago,” said Yasamin Mostofi, associate professor in the department of electrical & computer engineering at UC Santa Barbara. As a result, we're bombarded by Wi-Fi, essentially low-frequency radio waves, nearly everywhere we go. With the proliferation of mobile devices around the world, the demand for connectivity is constantly increasing. ![]() How can rescuers know how many people are trapped and where they are? A UC Santa Barbara researcher may have a solution using something that’s around us all the time: Wi-Fi. An earthquake strikes a major city, a large building collapses and people are trapped inside.
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