Radar that see through the walls.

Upper: A man (red spot) is seen by a stealth-radar, through a wall. Der Spiegel Online, Courtesy. Below: A hardware of a stealth-radar. Cost: 100 dollars. Courtesy:http://www.engadget.com

The normal radar sends (trasmit,scatter), radio short waves of great-intensity, to specific objects recognizing them for its clearly bouncing (echoes), grasped by receivers generally located at the side of the trasmitter. In this case, the receiver discriminates and chooses alone clearly signals, ruling out the weak, type murmur (random noise, Zufallsrauschen). By the same thing, the signals of normal radars (put in operation by Chris Hülsmeyer, in 1904), are easily identifiable.

Now it is beginning to be consolidated a new type of radar (stealth-radar, Rausch-radar), based not in clearly signals, but well in random signals, type murmur, usually not undetectable (Eric K. Walton, University of Ohio-Uses). In reality the characteristics of these waves were known -since 1950- although by unknown reasons, they were not sufficiently studied. The new radar (whose hardware, cost barely $ 100 dollars and has enough acquaintance in Germany : Jurgen Sachs, Technical University of Ilmenau), scatter signals of low-intensity (similar to the confused myriad of daily electromagnetic signals present in the atmosphere: TV, cell, light bulbs, etc), with a high range of frequencies and super-wide-band-that impedes to be interfered by other signals. As no receiver of radio, grasps random noise, this radar is undetectable. Nevertheless, if attention is put, is possible to identify its signals, identifying its origin, having vertical receivers and knowing the form and characteristics of the waves. If someone lacks experience, still its random noise echo, can deceive to the own transmitters. Although its waves displace through the time and are slow and changing, they have the advantage to possess a great wide of band. With the echoes and a computer is possible to recognize and to give real form to the object. With several computers in simultaneous, is possible to draw gigantic maps of many objects. With this type of radar is possible to detect sunken cities, survivors of catastrophes, detect velocity of vehicles in motion without the radar of the driver notice itself, detect hidden enemy soldiers , see through the walls, see the hidden dangers behind a bush, to detect internal organs, tumors in breast and heart, broken bones and even slidings of few centimeters, in Mars.

Radar que vé a través de paredes

El radar normal, envia (trasmisor), ondas de radio de gran intensidad y cortas, a objetos determinados reconociéndolas por el nitido reflejo de las mismas (ecos), captados por receptores generalmente ubicados al lado del trasmisor. En este caso, el receptor discrimina y escoge solo señales nitidas, descartando las débiles o, tipo murmullo. Por lo mismo, las señales de los radares normales (puestas en funcionamiento por Chris Hülsmeyer, en 1904), son fácilmente identificables.

Ahora está empezando a consolidarse un nuevo tipo de radar, basado no en señales nitidas, sino mas bien en ondas al azar, tipo murmullo, mayormente usualmente no identificables (Eric K. Walton, Universidad de Ohio-USA). En realidad ya se conocían las caracteristicas de estas ondas -desde 1950- aunque por razones desconocidas, no fueron suficientemente estudiadas. El nuevo radar (cuyo hardware, cuesta : 100 dolares), bastante conocido en Alemania (Jurgen Sachs, Universidad Tecnica de Ilmenau), envia (dispersa), señales de baja intensidad (similares a la miriada de confusas señales electromagnéticas presentes a diario, en la atmósfera :TV, celulares, bujias, etc), con un alto rango de frecuencias y ultra-banda- ancha lo que impide ser interferida por otras señales . Como ningún receptor de radio, capta ondas murmullo, este radar es indetectable. No obstante, si se pone atención, es posible identificar su señal, identificando su procedencia, disponiendo de receptores verticales y conociendo la forma y caracteristicas de las ondas. Si se carece de experiencia, aún su eco susurrante, puede engañar a los propios emisores. Aunque sus ondas se desplazan a lo largo del tiempo y son lentas y cambiantes, tienen la ventaja de poseer un gran ancho de banda. Con los ecos y una computadora es posible reconocer y dar forma real al objeto. Con varias computadoras en simultáneo, es posible trazar mapas gigantes de muchisimos objetos. Con este tipo de radar es posible detectar ciudades hundidas, sobrevivientes de catástrofes, detectar velocidad de vehículos en marcha sin que el radar del conductor se percate, detectar soldados enemigos ocultos, ver a través de paredes, ver que peligros hay mas allá de un arbusto, detectar órganos internos, tumores en mama, corazón, huesos rotos y hasta deslizamientos de pocos centímetros, en Marte.