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How Is Inertial Navigation System Different From GPS?


When you switch on a GPS that is working correctly, it generates a specific position measurement. It uses a co-ordinate system to give its users an absolute position. On the other hand, the inertial navigation system generates measurements relative to their latest position. Inertial navigation systems are used in airplanes, missiles to navigate the moon, and submarines. The INS works with where it started. You need to indicate where the system began to calculate its current position using its measurements. This makes them ideal for use in aircraft, missiles, and spaceships because they can indicate where they started.

How Does an Inertial Navigation System Work?

An inertial navigation system comes in different shapes and sizes. However, the systems use several inertial sensors and a type of central processing unit that helps track all measurements from the inertial sensors. An inertial navigation system has two parts: the Inertial measurement (IMU) and the Inertial reference unit (IRU).

Read More: 9 Best Free Mapping and Navigation Apps for Android and iPhone

Types of Sensors That the Inertial Navigation System Uses

  • Accelerometers-Most inertial navigation systems use this type of sensor. Accelerometers are used in measuring acceleration.
  • Gyros- This type of sensor is mostly used inertial navigation systems. Gyros are used in measuring rotation.

The inertial navigation system is ideal for industries or individuals who need to know where they are and have plenty of space.