Inertial navigation system
CONTINUOUSLY COMPUTED DEAD RECKONING
Inertial navigation; Inertial guidance; Strapdown; Inertial tracking device; Sdins; SDINS; Inertial reference system; Inertial Navigation System; Inertial navigation unit; Inertial Navigation; Inertial Reference System; Inertial guidance system; Fluid-suspended gyrostabilized platform; Gimballed gyrostabilized platform; Strapdown inertial navigation; Strapdown inertial guidance; History of inertial navigation; Inertial motion tracking; Inertial positioning system
An inertial navigation system (INS) is a navigation device that uses motion sensors (accelerometers), rotation sensors (gyroscopes) and a computer to continuously calculate by dead reckoning the position, the orientation, and the velocity (direction and speed of movement) of a moving object without the need for external references. Often the inertial sensors are supplemented by a barometric altimeter and sometimes by magnetic sensors, (magnetometers) and/or speed measuring devices.