Datasheet

Mechanical and Electrical Specifications
22 Freescale Sensor Fusion Library for Kinetis MCUs, Rev. 0.7, 9/2015
Freescale Semiconductor, Inc.
Figure 13. Simulated Standard Deviation and Variance as f(constellation size)
4.7.3 Magnetic Calibration Performance Metrics
Table 13 provides some basic guidance with regard to performance of the magnetic calibration library
in a stand-alone configuration.
Table 13. Magnetic Calibration Performance Metrics
Characteristic Symbol Conditions Min Typ Max Unit
Compass heading linearity;
see Compass Heading
Linearity and Accuracy
TBD < 5 degrees
Compass heading accuracy;
see Compass Heading
Linearity and Accuracy
TBD < 5 degrees
NOTE:
The results shown in this table are more conservative than simulated numbers, and are more likely to be representative of
actual results.
4.8 Fusion Model Performance Metrics
4.8.1 Background
The six and nine-axis Kalman filters are optimized for calculation of device orientation. Unmodelled
sources of error will affect the other sensor outputs. Tradeoffs are a function of the Kalman filter
configuration and are subject to change.
Separate tables are presented for each of the sensor combination options provided by the Fusion
Library. Common test conditions and setups are used for all options.