Inertial navigation system
Continuously computed dead reckoning / From Wikipedia, the free encyclopedia
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An inertial navigation system (INS; also inertial guidance system, inertial instrument) 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.[1] Often the inertial sensors are supplemented by a barometric altimeter and sometimes by magnetic sensors (magnetometers) and/or speed measuring devices. INSs are used on mobile robots[2][3] and on vehicles such as ships, aircraft, submarines, guided missiles, and spacecraft.[4] Older INS systems generally used an inertial platform as their mounting point to the vehicle and the terms are sometimes considered synonymous.
This article's lead section may be too short to adequately summarize the key points. (September 2023) |
Integrals in the time domain implicitly demand a stable and accurate clock for the quantification of elapsed time.