Bookmark and share the address of UKRAINE ENGLISH NEWS on your social bookmarking website
Most users ever online was 229 on Sat Aug 08, 2015 11:03 pm
The new experimental set of sensors is dubbed the Standoff Suicide Bomber Detection System, or SSBDS, Developed by the Joint Improvised-Threat Defeat Agency, or JIDA, it's already seen action; in 2012, the Defense Department took an early version to Afghanistan, the report says.
The SSBDS is not a single magic lens, but an ensemble of sensors that measure radiation at the midwave and longwave infrared as well as the terahertz wavelengths. There's also a visible-light camera. Terahertz radiation may sound like something to avoid — but because it uses low energy and isn't ionizing, it's less dangerous to human tissue than are x-rays. It's been used as part of security applications since 2004.
On Tuesday, JIDA officials demonstrated the system to reporters at Virginia's Fort Belvoir. When directed at a person, the SSBDS offers three views: a grainy black and white, which is the infrared; a bright orange glow, which is the terahertz; and a regular picture from the camera.
The presence of a suicide belt won't set off alarms but a trained — or simply attentive — eye can use the multiple sensors to see dark shapes or spots — areas of negative space that indicate an abnormality, which should prompt a closer investigation. In essence, you're looking not for explosives but for holes in the picture where there should be solid white or orange.
"It's a perfect system for dual use with Department of Homeland Security. Just think of Paris," one JIDA scientist said....................
To read further go to this link: unian.info