Sen­sors Make the Ocean a Bad Hid­ing Place

Small sub­ma­rine drones, per­ma­nent sen­sors on the ocean floor, and planes equipped with quantum mag­ne­tome­ters are to make sure that no submarines can move un­de­tected about the South China Sea.

Science Illustrated - - TECHNOLOGY/ SUBMARINES -

DRONES SENT ON PA­TROL

If a sub­ma­rine is vis­i­ble to sonar, sub­ma­rine drones can be used to find the sub­ma­rine with op­ti­cal sen­sors. They can also pa­trol the wa­ters for months.

SONAR SEARCHES THE OCEAN FLOOR

A fine-meshed net­work of pas­sive sonar sen­sors will be placed on the ocean floor. They can emit sound, us­ing the echo to spot, if the sound has struck ob­jects.

BUOYS LIS­TEN TO THE OCEAN

Hy­drophones – mi­cro-phones for un­der­wa­ter use – are an­chored at dif­fer­ent depths. The mikes’ trans­ducer con­verts sound waves into elec­tric sig­nals.

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