Howtosignalprocessing
- What causes integration drift?
- Can you calibrate accelerometer?
- How do you use an accelerometer to determine position?
What causes integration drift?
It is a well-known fact that the use of numerical integration of acceleration/angular rate information from inertial sensors (accelerometers/gyroscopes) to obtain position/orientation information inherently causes position/orientation errors to grow with time, which is commonly known as “integration drift”.
Can you calibrate accelerometer?
There are several methods that can be used to calibrate accelerometers and the process can take place at a variety of locations. For example, sensors can be sent to the manufacturers for calibration, calibration can be done in-house, or sensors can be sent to an outside laboratory for calibration.
How do you use an accelerometer to determine position?
Re: Get a Position from Gyroscope and Accelerometer
You need a magnetometer to calculate the attitude (rotation). Use the attitude to filter out the gravity acceleration from the raw accelerometer values so you're left with linear acceleration. Integrate it twice to get velocity and position and voila!
