Created a system that facilitates communication of submarines with aircraft
Researchers from the Massachusetts Institute of technology (MIT) have developed a system that aims to solve the problem of communication of submarines with aircraft. Now wireless underwater sensors are not able to communicate with sensors on land or above it, because the signals from radio and cellular communications, GPS, freely passing through the air, quickly disperse into the water. At the same time acoustic signals sent underwater devices, reflected from the surface of the water, not being able to go beyond it.
Invented at the MIT Media Lab technology is called translational acoustic-radio frequency communication (Translational Acoustic-RF, TARF). Underwater sonar transmitter sends a signal to the surface of the water that creates her a weak vibration of different frequencies (100 and 200Hz). These vibrations correspond to the symbols “0” and “1” used in binary notation. Located over water highly sensitive receiver reads these vibrations and convert into useful information.
According to scientists, TARF is still at an early stage of development, but opens up new possibilities for communication. Especially this technology should be of interest to the military, because in our day to transfer data from submarines to aircraft first have to emerge, thereby revealing their location.
But in the civilian sector TARF has prospects. So, for example, the system can be used in the study of marine life using underwater drones. Another useful application for a TARF — detection fallen into the sea planes. In this case, the transmitter must be built into the black box of an airliner.