When I learn the EKF of px4----->ekf_att_pos_estimator, I have some questions.
I know the dax_b、day_b、daz_b、dvx_b、dvy_b and dvz_b are IMU 's noise, but can I treat dax_b、day_b、daz_b 、dvx_b、dvy_b and dvz_b as daxCov、dayCov、dazCov、dvxCov、dvyCov and dvzCov?
I find d--Cov has initial value, but the initial value of d--_b is 0.
Can you tell me the difference or same of them?