Inertial Navigation Systems

An inertial navigation system uses motion to determine position from a starting point. Inertial navigation systems are very accurate over short periods but experience a exponentially increasing error over long periods. On Subsonus an inertial navigation system fuses the acoustic position and velocity with inertial sensors and a depth sensor to achieve an optimal solution with accuracy far beyond that of a standalone acoustic positioning system. The inertial navigation system also fills in the gaps between acoustic updates and for periods when acoustic updates are not available. Subsonus is one of the first USBL systems on the market to offer an integrated, tightly-coupled inertial navigation system.