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Automobile Industry

INS



Inertial Navigation System (INS)is a self-contained navigation technique in which measurements provided by accelerometers and gyroscopes are used to track the position and orientation of an object relative to a known starting point, orientation and velocity. Inertial measurement units (IMUs) typically contain three orthogonal rate-gyroscopes and three orthogonal accelerometers, measuring angular velocity and linear acceleration respectively. By processing signals from these devices it is possible to track the position and orientation of a device.

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.

An INS can detect a change in its geographic position (a move east or north, for example), a change in its velocity (speed and direction of movement), and a change in its orientation (rotation about an axis). It does this by measuring the linear acceleration and angular velocity applied to the system. Since it requires no external reference (after initialization), it is immune to jamming and deception.



Advantages
1.INS is a self-contained navigation system with good elusive feature and free from external EMI.
2. Work in the air, earth surface,even under the water in every enviornment and time.
3. Provide location,velocity,course,attitude angle data. Good navigation information continuity and low noise.
4. High rate of data update,short precision and good stability.


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