Scientists at Tomsk State University (TSU) have developed a device — a radio tomography, which allows, in particular, to "see" through walls, look for anti-personnel mines and archaeological sites, stealth aircraft and even people under the rubble, told RIA Novosti on Tuesday, head of the Department of Radio Physics university professor Vladimir Yakubov.
According to him, the radio tomography — is radar, coupled with a computer. It allows you to remotely "see" even the smallest hidden objects. Radio tomography of the Tomsk University scientists several times cheaper than their foreign counterparts, it is about 1-2 million rubles.
Long wave, short wave
At the core of the device is "candling" with ultra-wideband (UWB) radiation when the signal is contained in one and the high and low frequencies simultaneously.
"Low-frequency waves penetrate deeply enough, they have great length, but you can see the deep, but with poor resolution. And you want to have a deep penetration with a good resolution, and that the two contradictory requirements: one requires a longer wavelength, and the other — a small. ULTRAWIDEBAND pulse provides a compromise between the deep penetration and good resolution. Due to the high frequency radiation can be focused and have high resolution, but at the expense of low frequencies — to deeply penetrate into the media, "- said the professor.
According to him, with the help of mathematical data can study the location of various objects in space and to control their movement.
"From one or several points radiated radio waves are scattered by the test object in a medium, then they are recorded on a plurality of sensors — made and will be processed on a computer. Result in the computer there is a two-dimensional image of the structure and environment and objects therein" — said the scientist.
According to him, the analogs are ultrasonic radio tomography, magnetic resonance and X-ray tomography.
"But, unlike them, we use the phenomenon of focusing and synthesizing these images from many angles, either by scanning or by using switchable antenna arrays. We get Multidimensional Data — impulses are sent in all directions at once, and from all sides at once, and accepted . As a result of this, and manages to pull radiovision with the maximum available precision, "- said Yakubov.
As the professor, for a full scan object now takes only 10 seconds.
Mines, invisible and Baikal
According to the professor, the range of application of radar imaging is quite extensive. For example, university researchers developed instruments can be used to search for archaeological sites, underground engineering structures such as pipelines. You can also control what happens in the next room — the device can "see" through walls.
"And the people under the rubble can be sought. People are often under the snow or under the remains of engineering structures, and they are very difficult to get out of there.’s To determine if there is anyone alive — this is one of the applications," — he says.
Also, using the instrument can be found in the land of mines.
"We once carried out in conjunction with the Germans working to find in the land of dielectric objects such as anti-personnel mines — in terms of layout. UWB imaging methods we are able to reconstruct the shape of the objects. Stealth aircraft can be detected — it’s an illusion that they are invisible. They visible only in a certain frequency range, and the use of UWB radiation can detect them, "- said Yakubov.
Also, scientists have proposed TSU professionals Buryat Scientific Center, Siberian Academy of Sciences idea to do probing ice of Lake Baikal in search of underground springs. They are on the bottom and feed the lake, and no one knows where they are exactly.
"Where are the keys — the whole mystery. First — because Baikal is sufficiently large, the second — when the keys are located on the surface of the water, the thermal contrast is greatly eroded, and locate the sources of the keys is difficult. Use radio waves to determine the thickness of the dielectric objects, including ice . winter ice to wash away the keys and the bottom topography of ice repeats the location of the keys. We could not find them via radio waves "- said Yakubov.
According to him, these data are necessary for scientific and applied problems related to the preservation of Lake Baikal.
"We have offered to organize such research, but the lack of funding slows down this process" — complained the professor.
TSU was established by the decree of Alexander II in 1878 as the Imperial Tomsk University was the first university in the Urals. In 1998, the TSU is included in the decree of the president of the most valuable objects of cultural heritage of the peoples of Russia. In April 2010, the TSU has received the status of a national research university.