Israeli development: the physical mask that causes objects to disappear
Researchers at Tel Aviv University propose a completely new radar fraud strategy, based on the physical principle of utilizing the Doppler effect
ynet | 22.08.21 | 10:21
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A new development of Tel Aviv University uses the basic laws of physics to cause various objects to "disappear" and slip under the radar's open eye. The researchers believe that technology may change the way the intelligence and security community works against radars. It should be emphasized that development has nothing to do with the military. At Tel Aviv University. The study was published in the scientific journal Scientific Reports.
The actual evasion of the radar, as it appears to the radar
(Photo: Tel Aviv University)
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The researchers explained that since the invention of the radar about 100 years ago, one of the significant challenges facing the scientific and security community around the world has been to develop a technology that would allow it to be avoided.
Over the years, a number of action strategies have been put in place aimed at radar fraud. One of the most common ways to do this is to scatter chaff: chaff is a general term for a cloud of fibers or metal strips commonly scattered around the potential target (plane, ship or any other military object). Radar is based on reflections of electromagnetic waves, the chaff creates a mask that is expressed as an obscure stain on the radar monitor, thus losing the ability to accurately locate the target location.
Another strategy is to reduce the signature of the target through evasive technology. At the basis of this technology is a meticulous architecture of the geometry and material that make up the stealth, as happens, for example, in the "mighty" plane in the service of the Israeli Air Force.
imaging
Imaging (Illustration: Tel Aviv University)
Now the researchers, led by Prof. Ginzburg, are proposing an entirely new radar fraud strategy, based on the physical principle of utilizing a Doppler effect. A Doppler effect occurs when an object (such as a vehicle, plane or ship) moves relative to a radar. It is expressed in the fact that the frequency of the electromagnetic waves scattering from the target back to the radar is shifted relative to the frequency transmitted, in a manner closely related to the velocity of the target.
The basis of the new development is based on covering the target with a special material with time-varying properties, which allow the radar to be deceived and cause it to measure zero velocity from the target, thus assuming that it is a static background that should not be considered.
Prof. Ginzburg explained: "Because military objects, such as airplanes, move at high speeds, the scattering of electromagnetic waves from their surface is greatly affected by the Doppler effect, and this is reflected during radar detections. Identification is done by filtering and separating fast targets against a slow and static background - thus separating a fast and distant plane from a nearby bird, mountain or rain cloud. What we are proposing here is not to reduce the scattering as some of the existing technologies do, but to put on a dynamic phase mask that will allow it to outwit the radar processing unit.
Prof. Pavel Ginzburg
Prof. Pavel Ginzburg
Photo: Tel Aviv University
"We actually control the temporal phase of the electromagnetic wave returned from the bone, thus exploiting the weakness of the radar signal processing system," adds PhD student Vitaly Kozlov. The whole. "In practice, the radar will show a static object that is difficult to separate from its surroundings. Another advantage is the versatility of the system we offer, since it can be adapted to purposes of different sizes and types.
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Researchers at Tel Aviv University propose a completely new radar fraud strategy, based on the physical principle of utilizing the Doppler effect
ynet | 22.08.21 | 10:21
Add a comment
printing
Did you find a mistake? Report to us
A new development of Tel Aviv University uses the basic laws of physics to cause various objects to "disappear" and slip under the radar's open eye. The researchers believe that technology may change the way the intelligence and security community works against radars. It should be emphasized that development has nothing to do with the military. At Tel Aviv University. The study was published in the scientific journal Scientific Reports.
The actual evasion of the radar, as it appears to the radar
(Photo: Tel Aviv University)
by TaboolaPromoted Links
97% of Israelis with health problems who are entitled to a tax exemption do not even check
Realistic - practical economy
A graduate of MARAM has established a civilian programming course, which trains programmers within 3 months
Web-Mine - Career
Greek restaurants on Carlebach Street in Tel Aviv
Food
The researchers explained that since the invention of the radar about 100 years ago, one of the significant challenges facing the scientific and security community around the world has been to develop a technology that would allow it to be avoided.
Over the years, a number of action strategies have been put in place aimed at radar fraud. One of the most common ways to do this is to scatter chaff: chaff is a general term for a cloud of fibers or metal strips commonly scattered around the potential target (plane, ship or any other military object). Radar is based on reflections of electromagnetic waves, the chaff creates a mask that is expressed as an obscure stain on the radar monitor, thus losing the ability to accurately locate the target location.
Another strategy is to reduce the signature of the target through evasive technology. At the basis of this technology is a meticulous architecture of the geometry and material that make up the stealth, as happens, for example, in the "mighty" plane in the service of the Israeli Air Force.
imaging
Imaging (Illustration: Tel Aviv University)
Now the researchers, led by Prof. Ginzburg, are proposing an entirely new radar fraud strategy, based on the physical principle of utilizing a Doppler effect. A Doppler effect occurs when an object (such as a vehicle, plane or ship) moves relative to a radar. It is expressed in the fact that the frequency of the electromagnetic waves scattering from the target back to the radar is shifted relative to the frequency transmitted, in a manner closely related to the velocity of the target.
The basis of the new development is based on covering the target with a special material with time-varying properties, which allow the radar to be deceived and cause it to measure zero velocity from the target, thus assuming that it is a static background that should not be considered.
Prof. Ginzburg explained: "Because military objects, such as airplanes, move at high speeds, the scattering of electromagnetic waves from their surface is greatly affected by the Doppler effect, and this is reflected during radar detections. Identification is done by filtering and separating fast targets against a slow and static background - thus separating a fast and distant plane from a nearby bird, mountain or rain cloud. What we are proposing here is not to reduce the scattering as some of the existing technologies do, but to put on a dynamic phase mask that will allow it to outwit the radar processing unit.
Prof. Pavel Ginzburg
Prof. Pavel Ginzburg
Photo: Tel Aviv University
"We actually control the temporal phase of the electromagnetic wave returned from the bone, thus exploiting the weakness of the radar signal processing system," adds PhD student Vitaly Kozlov. The whole. "In practice, the radar will show a static object that is difficult to separate from its surroundings. Another advantage is the versatility of the system we offer, since it can be adapted to purposes of different sizes and types.
פיתוח ישראלי: המסכה הפיזיקלית שגורמת לעצמים להיעלם
חוקרים מאוניברסיטת תל אביב מציעים אסטרטגיית הונאת מכ"ם חדשה לחלוטין, המבוססת על העיקרון הפיזיקלי של ניצול אפקט דופלר
