Controlling UAV requires high-precision dynamic information input. However, mini UAV needs more demands because of the its small volume. Using MEMS sensor can make the UAV become high-precision, low power consumption and inexpensive machine. Accelerometer and magnetometer can measure the acceleration of gravity and geomagnetic field that the vectors are uncorrelated, which can be considered as a vector in order to correct the gyroscope. Kalman filter based on quaternion has been adopted in this study in order to achieve the attitude measurement and error control of transporter.

Controlling UAV requires high-precision dynamic information input. However, mini UAV needs more demands because of the its small volume. Using MEMS sensor can make the UAV become high-precision, low power consumption and inexpensive machine. In this research, the core part is focusing on STM32F405, designing and implement the attitude and heading reference system (AHRS) based on 3-axis MEMS gyroscope, 3-axis MEMS accelerometer and magnetometer. Quaternion Kalman filter has been adopted in this study in order to achieve the attitude measurement and error control of transporter.