An inertial navigation system (INS) is a navigation aid that uses a computer, motion sensors (accelerometers) and rotation sensors (gyroscopes) to continuously calculate via dead reckoning the position, orientation, and velocity (direction and speed of movement) of a moving object without the need for external references.
It is used on vehicles such as ships, aircraft, submarines, guided missiles, and spacecraft. Other terms used to refer to inertial navigation systems or closely related devices include inertial guidance system, inertial instrument, inertial measurement units (IMU) and many other variations. Older INS systems generally used an inertial platform as their mounting point to the vehicle, and the terms are sometimes considered synonymous.
JieRui is a Chinese company, who engaged in research and develop Ring Laser Gyroscopes (RLG), Inertial Navigation Systems(INS), Inertial Measurement Units(IMU), North finding instruments, Heading and Attitude Reference Systems and Inclinometer, these systems are mainly used in aerospace navigation, high-speed railway measurement, rail transit measurement, ship navigation, land vehicle navigation, UAVs, deflection measurements of petroleum pipelines and dams, as well as coal mines.
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