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science and technology

Old Technology Solves New Problems

April 2002
By Paul Dixon

Engineers have updated and improved a 60-year-old lens antenna technology to create a low-cost, high-gain steerable microwave antenna for satellite tracking applications. Conceived in 1944, the Luneberg lens currently is being employed to maintain two-way satellite contact when a satellite, a receiver or both are moving.

Sonic Searches Gain Speed

June 2002
By Maryann Lawlor

Analysts who must search hours of audio recordings for key words of particular importance to a mission now can find them in a matter of seconds with nearly 100 percent accuracy. Because the technology supports any task that requires the search, analysis and monitoring of voice content, potential customers for the capability range from intelligence organizations looking for terrorist code words to customer service personnel seeking to improve client relations. Additional applications include knowledge management, training and education.

Dressing to the Nines On the Battle Lines

July 2002
By Sharon Berry

A project underway aims to develop a variety of nanomaterials that will aid threat detection and neutralization, enhance human performance, provide real-time automated medical treatment and reduce logistical footprint on the battlefield. The materials will be integrated into uniforms to protect soldiers and increase survivability.

Land Mine Detector Makes Waves

July 2004
By Cheryl Lilie

Exciting a land mine may not sound like a good idea, but developers of the Seismic Landmine Detection System are doing just that. A group of researchers from the Georgia Tech Research Institute in Atlanta, Georgia, has developed a land mine detection system that sends seismic waves through a minefield, slightly moving the earth and items buried beneath. A noncontacting radar sensor measures the ground displacement to identify and locate plastic anti-personnel or antitank mines.

Precision Guidance Reaches Small Munitions

March 2004
By Robert K. Ackerman

A new approach to guided munitions may empower small warheads with the same targeting precision employed by larger glide bombs and missiles. The technology takes a low-cost approach to guidance that could improve precision for artillery rounds, mortar shells and grenades for as little as $100 per warhead. Mass-production ultimately could open up the technology for bullets at an even lower cost.

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