Composition of Inertial Navigation System

An inertial navigation system usually consists of an inertial measurement device, a computer, a control display, and the like. Inertial measurement devices include accelerometers and gyroscopes, also known as inertial navigation combinations. The three-degree-of-freedom gyroscope is used to measure the three rotational motions of the aircraft; three accelerometers are used to measure the acceleration of the three translational motions of the aircraft. The computer calculates the speed and position data of the aircraft based on the measured acceleration signals. Control display shows various navigation parameters.

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