Aiming at existence of noise interference and measurement error in MEMS gyro for aircraft control

and the error will accumulate with time

employs polarized light sensor as measurement information to correct heading angle information of aircraft. Describe measurement principle of polarized light sensor in detail and set up mathematical model for MEMS gyroscope and polarized light sensor error

on this basis

simple and effective direct Kalman filtering is used for data fusion. Measurement result of indoor precise turntable experiment indicates that polarized light sensor can effectively correct heading information of angular velocity gyro

after 280 s

the error dropps from 36. 27° to 6. 05°

the optimal estimation heading angle can provide accurate data information for flight control.