Inertial Labs Knowledge Base – technical articles on navigation and sensing

Inertial Navigation System Data Flow Chart

Purpose: The purpose of this Knowledge Base article is to show how information is used from respective sensors inside the Inertial Navigation System. Although a complex product, this diagram breaks down the different functions and explains how data is used and how it can be accessed on the device.
Last Updated: March 2020
Inertial Navigation System (INS) Data Flow Chart

This flow chart illustrates the data processing cycle within an inertial system using a Kalman Filter Based Algorithm. The system fuses raw measurements from the IMU (gyroscopes, accelerometers, and magnetometers) with external GNSS signals and Aiding Data. Through Initial Alignment and continuous INS Errors Correction, the system ensures precise and stable output of position, velocity, and orientation (Pitch, Roll, and Heading).

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