Frequently Asked Question

What is the bias drift of gyroscopes?
Last Updated 2 years ago

The gyroscope gives us the rate of change of the angular position over time (angular velocity) with a unit of [deg./s]. This means that we get the derivative of the angular position over time.
To obtain the angular position, we can simply integrate the angular velocity. So, assuming that at t=0 theta=0, we can find the angular position at any given moment t with the following equation:
The gyroscope drift is mainly due to the integration of two components: 
  • a slow changing, near-dc variable called bias instability 
  • a higher frequency noise variable called angular random walk (ARW)


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