Long before ships relied on GPS to ... before radio navigation systems such as LORAN, vessels relied on a still impressively sophisticated means of determining their position: inertial navigation.

ANELLO Photonics has introduced its Maritime inertial navigation system ... device designed for GPS-challenged environments. Its capabilities include reference-grade position, velocity and attitude ...

Guidance System: AGM-86B, Litton inertial navigation element with terrain ... payload rather than a nuclear payload and employs a GPS aided INS. An enemy force would have to counterattack each ...