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Mobile telephone masts' can detect stealth bombers'

MULTI-BILLION pound stealth bombers could be rendered obsolete by a British invention that uses existing mobile telephone masts to detect and track aircraft that were previously invisible to radar

Stealth fighters and bombers such as the F117, B1 and B2 played key roles in the Gulf and Kosovan wars as they are almost impossible to detect using conventional radar. However, the ease with which the mobile telephone mast system developed at Roke Manor Research at Romsey in Hampshire can be used to detect the aircraft has greatly concerned the military

Peter Lloyd, head of projects at the laboratory's sensor department, said: "I cannot comment in detail because it is a classified matter, but let's say the US military is very interested." Stealth aircraft, each of which costs at least £1.4 billion, are shaped to confuse radar. A special paint absorbs radio waves, reducing the radar signature to the equivalent of a gull in flight

The Roke Manor scientists discovered that telephone calls sent between mobile phone masts detected the precise position of stealth aircraft with great ease

Mr Lloyd said: "We use just the normal phone calls that are flying about in the ether. The front of the stealth plane cannot be detected by conventional radar, but its bottom surface reflects very well"

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