CNN CNN Newsroom April 10, 2014 18:15:00
You deploy a canister from a moving aircraft and it releases a little microphone when it hits the water and the microphone goes down about 1,000 feet and it has a surface float that can send the sound signals to the plane that it was launched from so we're actually getting the sonic information from below. but we're getting it in realtime to the aircraft above. >> is this method as accurate as the tpl, the towed pinger locater? >> yeah, i think so. they are all very high fidelity microphones. it's actually pretty astounding that it actually works. because if the pinger was actually on the bott...
Source: archive.org