AttitudeQuaternionEKFParameters struct
          #include <iDynTree/AttitudeQuaternionEKF.h>
        
        set up the quaternion EKF
Public variables
- double time_step_in_seconds
 - discretization time step in seconds, default value:
 - double bias_correlation_time_factor
 - time factor modeling how fast the bias can vary, default value:
 - double accelerometer_noise_variance
 - measurement noise covariance of accelerometer measurement, default value:
 - double magnetometer_noise_variance
 - measurement noise covariance of magnetometer measurement, default value:
 - double gyroscope_noise_variance
 - system noise covariance of gyroscope measurement, since it is the input to the system, default value:
 - double gyro_bias_noise_variance
 - system noise covariance of gyroscope bias estimate, default value:
 - double initial_orientation_error_variance
 - initial state covariance of orientation, default value:
 - double initial_ang_vel_error_variance
 - initial state covariance of angular velocity, default value:
 - double initial_gyro_bias_error_variance
 - measurement noise covariance of gyroscope bias, default value:
 - bool use_magnetometer_measurements
 - flag to enable the use of magnetometer measurement for yaw correction, default value: false