Wi-Fi device capable of detecting and behind walls

British engineers at the University of London University College London have developed the first radar device is able to detect the movement of objects behind walls, and through wireless Wi-Fi signals. Engineer two Karl Woodbridge taught in the Department of Electrical and Electronic Engineering, and the other is Kevin Shetty taught in the Department of Criminology and Security, Vsra work this device, where the device monitors changes frequencies from radio waves reflected issued by moving objects, when moving the body behind the wall changed frequency As a result the relative motion between the person and the observer, if approached the person of the observer "radar Wi-Fi" increasingly frequency, and vice versa if away the source for the observer be frequency less, and this phenomenon is called the "Doppler Effect". device named "Radar Wi-Fi" is a small-sized bag Minor hand, and has the kind of هوائيتين "antenna", in addition to a signal processing unit and control system, according to the word of engineers, the device managed to locate the person and speed and direction behind a thick wall You can use this device and benefit from it in the household uses and a survey of the buildings in the event of crime, as he is considered very important in the military uses, and therefore, the Ministry of Defence (MoD) attention to this subject largely, and conduct extensive testing on it. Currently the device needs to be many improvements other, where engineers are working to make the device detector of static objects behind walls and not only animated, through capture and detect the breathing process and exhale movements of these people.
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