Defense Researchers Plan To Bring "GPS" Where It's Never Gone Before: Under The Sea
A system of audio transmitters would stand in for GPS's satellite broadcasts and let underwater drones navigate without surfacing.
Steven Melendez | June 11, 2016
The satellite broadcasts that GPS systems rely on can’t penetrate very far below the ocean’s surface, and that’s a problem for unmanned underwater vehicles—essentially, drone submarines—designed to autonomously navigate below the sea.
That’s why the Defense Advanced Research Projects Agency has announced plans to build an underwater GPS-style system called Posydon—which stands for Positioning System for Deep Ocean Navigation—that will use underwater sound broadcasts to let submarines determine their own positions without coming to the surface.
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"Illustration explaining undersea positioning of POSYDON system" Source: http://www.baesystems.com/en-us/article/undersea-navigation-and-positioning-system-development-to-begin-for-u-s--navy |
<more at http://www.fastcompany.com/3060116/defense-researchers-plan-to-bring-gps-where-its-never-gone-before-under-the-sea; related articles and links: http://www.darpa.mil/program/positioning-system-for-deep-ocean-navigation (Positioning System for Deep Ocean Navigation (POSYDON). April 2016) and http://www.theatlantic.com/technology/archive/2016/06/its-gps-underwater-for-robots/486656/ (GPS Doesn't Work Underwater. So the U.S. Navy is developing a new kind of system—built specifically for drone submarines. June 13, 2016)>
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