Title :
Experimental Validation1
Author :
Changey, Sebastien ; Pecheur, Emmanuel ; Brunner, Thomas
Author_Institution :
GNC Dept., French-German Res. Inst. of St.-Louis (ISL), St. Louis, France
Abstract :
A priori information given by the complete modeling of the ballistic behavior (trajectory, attitude) of a projectile is simplified to give a pertinent reduced evolution model. An Extended Kalman Filter (EKF) is designed to estimate three attitude angles from measurements of the magnetic field of the earth given by a three axis magnetometer sensor embedded on the projectile, completed with a three axis accelerometer. The algorithm has been tested on real data recorded during a free flight test over a distance of 400 meters. The results show that we can estimate milliradians with non-linear equations and approximations, with good accuracy.
Keywords :
Kalman filters; accelerometers; magnetic field measurement; magnetic sensors; magnetometers; nonlinear filters; projectiles; weapons; EKF; accelerometers; attitude angle estimation; attitude estimation; ballistic behavior; extended Kalman filter; free flight test; magnetic field measurements; nonlinear approximations; nonlinear equations; projectile; reduced evolution mod; three axis magnetometer sensor; Accelerometers; Calibration; Earth; Estimation; Magnetic field measurement; Magnetometers; Projectiles; Estimation; Kalman; Magnetometer; Navigation; Projectile;
Conference_Titel :
Position, Location and Navigation Symposium - PLANS 2014, 2014 IEEE/ION
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4799-3319-8
DOI :
10.1109/PLANS.2014.6851488
