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An inertial navigation system (INS) is a navigation device that uses a computer, motion sensors (accelerometers) and rotation sensors (gyroscopes) 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 …
What are the typical inertial navigation platform errors?
There are numerous error sources that influence the accuracy of a stand-alone inertial navigation system, including gyro drift, gyro scale factor, accelerometer bias, accelerometer scale factor, sensor assembly alignment, computational errors, and initial condition.
The 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.
What are the 3 inertial navigation system categories?
Stabilised Platform INS Three accelerometers are mounted on a platform and orientated (usually) north/south, east/west, and up/down. This platform is driven by gyros (two or three) to always maintain its alignment with these axes regardless of any movement of the aircraft.
A clear and universally agreed upon definition for the term “Inertial Navigation System (INS)” is not possible. On the one hand the term INS is used as a blanket description for a wide variety of navigation sensors and systems of different design; and on the other hand, it is also used to describe a specific version of these sensors and systems!
What does ins stand for in navigation system?
Regardless of the technology used and the configuration of individual components, an Inertial Navigation System (INS) refers to the Inertial Platform, Reference System and Unit, and associated Inertial Outputs.
How is the latitude of an aircraft determined?
Once the vertical reference is attained, and the aircraft remains stationary, the only movement to be detected is the Earth’s rotation (roughly 15 degrees per hour). If the heading is known, then the velocity detected by the INS will determine the local Latitude.
What do you call an air data inertial measurement unit?
There are many other interchangeable terms in use such as: Inertial Guidance System, Air Data Inertial Reference Units and Systems, Inertial Measurement Unit etc, which can all be used when referring to INS.