Submarines operate for weeks or months beneath the ocean surface, cut off from the satellite signals that guide nearly every other modern vehicle. GPS radio waves cannot penetrate seawater beyond a ...

We rely daily on the GPS on our phones to get to many different places in our lives. However, the technology stops working in the depths of the ocean, which is why submarines need something different.

Breakthrough trial with Tiqker clock aboard XCal submarine advances resilient navigation in GPS-denied environments Testbed submarine XV Excalibur went to sea with Infleqtion’s quantum optical atomic ...

Scientists from Xinjiang University in China have allegedly developed a new ultraviolet (UV) producing crystal ...