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.

Underwater gravity-aided inertial navigation systems (INS ... to improve the accuracy of positioning systems, particularly in environments where GPS signals may be weak or unavailable.

Inertial Navigation Systems ... in applications such as stationary and GPS-aided in-motion alignment[3]. Furthermore, integrating INS with Global Navigation Satellite Systems (GNSS) has been ...

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 ...