What is an INS (inertial navigation system)?

Inertial navigation systems were initially produced for rockets. An inertial navigation system (INS) is a navigation device that utilizes a computer, motion sensors and rotation sensors to consistently ascertain by the velocity of a moving object without the requirement for outside references. Inertial navigation is utilized in a wide scope of utilizations incorporating the navigation of aircraft, missiles, spacecraft, submarines and ships. It is additionally installed in some cell phones for reasons of cell phone location and tracking.