Radar Detectors help detect suicide bombers

Police radars, used to detect cars and motorcycles at high speeds, can help identify suicide bombers in the crowd.

Police use radar guns to wave. (Source: Internet)

The radar detonated ultra-short waves toward the vehicle and measured the frequency of the Doppler shift reflecting wave to calculate the speed of the vehicle.

In addition, the intensity and polarization of the reflected wave signal - the radar section of the radar - also provides us with additional information about the size and shape of the object and the material of the object. there.

However, researchers are not sure whether the wiring connecting the explosive blocks in the terrorists' shirts changed the radar-reflective radar cross sections enough to allow radar guns to detect them.

To solve this problem, two researchers William Fox of the Naval Research Institute in Monterey City and John Vesecky of the University of California, Santa Cruz, California, used computer software to See how radar signals at 1 gigahertz and 10 gigahertz are reflected from explosive hooks commonly used in suicide bombers' suits.

They found that the most obvious signal was reflected at 10 gigahertz. Together with their colleague Kenneth Laws , the two researchers used a 10 gigahertz low-intensity radar gun in a group of volunteers to participate in experiments, some of whom carried suits like explosives. suicide bombers.

As a result, they detected up to 85% of the bombers through radar-polarized signals reflected from a distance of 10 meters.

Researchers hope the US military will fund the continued development of this warning system to increase its ability to quickly detect and eliminate false alarms due to metal parts such as keys. Belts, jewelry and headphones can be created. They argue that military control posts will be very beneficial in using the same system.

In addition, the use of this system, established with cameras in commercial centers, train stations, and airports, will also be helpful in preventing and preventing suicide attacks.