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Dolphin-inspired radar

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    The dolphin's method of hunting with bubble nets could inspire a new type of radar able to detect explosive devices among less harmful 'clutter.'
    The new technology will use two sonar pulses sent in quick succession. The pulses will be phase inverted, and when they hit a solid target the reflected sound will be scattered in a linear pattern. Bubbles scatter the sound in a different way, which allows the new technology (and dolphins) to differentiate between underwater targets and bubbles. I believe that the same method will work using electromagnetic waves. The result will be slightly different, however, with the electromagnetic method causing the target to produce the non-linear scattering.
    Besides searching for bombs, the technology could be used to find survivors buried in rubble by seeking out their cell phones.
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