Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Novel Multisensor Detection System Fights Terrorism

04.04.2007
The terrorist attacks, carried out on September 11th 2001 in the USA and later on the London Underground, in Moscow and Madrid, have made the whole world see the real threat of international terrorism in a different light. Researchers from many countries have concentrated their efforts on the development of methods and special equipment with which it will be possible to detect explosive objects in advance.

Such devices include various sensor and detection systems playing a leading role. At present, modern airports implement luggage control that is usually performed with stationary X-ray devices with 2D project imaging of objects, which do not provide a full picture about material information or in-depth resolution. For comparison, the control of people at the same airports is performed with metal stationary (with sound signals) or hand-operated detectors. In a number of cases physical body control of a person is performed but it is considered unpleasant from both controllers’ and passengers’ point of view.

However, all these methods, with the exception of physical body control, do not provide a comprehensive body of data on dangerous non-metal objects, plastic and liquid explosive materials and substances, etc. In the majority of transportation centres personnel monitoring is usually limited to the application of stationary metal detectors.

Georgian scientists are actively involved in the development of a new multisensor detection system for three-dimensional (3D) imaging and signal processing that will help to receive information not only on the form and size of an object but also on the material that this object is made of.

“One of today’s existing developments, created in the field of microwave detection,” explains Nina Pavlovna Khuchua, Head of Laboratory at Tbilisi State University, “is a system developed in the USA and designed for three-dimensional imaging of hidden weapons, detected with the help of a signal on milimeter waves. However, this system has a number of major shortcomings. The most essential among them is that it is stationary, in other words, this system cannot be moved from place to place. Moreover, an operator determines, without additional checking, whether the discovered object is an explosive or not.”

At the heart of the developed multisensor system lies a combination of two methods that use various physical principals: microwave sensing and X-ray scanning. This combination will give additional information (in addition to size and form of hidden objects, the characteristics of material and distance from sensor to object), including enhanced spatial resolution. The scientists assume the implementation of a new approach to microwave sensing with the application of a quadrature sensor concept that will help to determine object parameters more precisely and exclude all key “parasitic” effects that impair measurement accuracy. Multiple X-ray line detectors with different energy thresholds will be used for X-ray scanning. The application of 3D inversion algorithms and algorithms of data synthesis facilitate the receipt of three-dimensional images of an object from both of these detectors. The detectors will be made on the basis of a semiconductor GaAs and related compounds.

Project Manager Nina Pavlovna Khuchua believes the multisensor has the following advantages for security objectives: first of all, to identify dangerous metal and non-metal objects and materials in both baggage and attached on individual passengers, as a result of which the researchers will be able to avoid physical body control; secondly, to quickly monitor people with a portable sensor system, helping to determine dangerous liquid materials in concealed cavities, such as footwear.

It should be emphasized that from the point of view of people’s X-ray radiation at present low-power radiation technologies are being developed which are not dangerous for health. Of course, the duration of the irradiation process is also of the utmost importance. It is assumed that the duration of monitoring will be no more than 1-2 seconds.

Therefore, under the necessary financing, the project will result in a new improved tool for monitoring people and baggage to detect concealed weapons or explosives. As a result terrorists’ chances to carry out their brutal plans will considerably reduce.

Olga Radkevich | alfa
Further information:
http://tech-db.istc.ru/ISTC/sc.nsf/events/novel-multisensor-detection-system-fights-terrorism

More articles from Information Technology:

nachricht The TU Ilmenau develops tomorrow’s chip technology today
27.04.2017 | Technische Universität Ilmenau

nachricht Five developments for improved data exploitation
19.04.2017 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

Millions through license revenues

27.04.2017 | Health and Medicine

The TU Ilmenau develops tomorrow’s chip technology today

27.04.2017 | Information Technology

Scientist invents way to trigger artificial photosynthesis to clean air

26.04.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>