Two UK-based companies, Thorn
EMI Electronics and McLennan
Marine, have developed a night surveillance system that can enable the
coastguards to spot a 20 metre boat
at a range of 7.5 kin or a person in
water at a distance of 1.5 km. And to
top it all, the people being spied at
would be totally unaware of the fact
that they are being watched, while
the images are being recorded on a camcorder.
Called the Marine Electro-optical Surveillance System, it comprises of an infra red searchlight attached to a thermal imager - originally designed to enable soldiers to see in the dark. It works by detecting the heat given off by objects such as humans and engine exhausts.
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