Orthogonal Polynomial for Pre-processing Flight Test Data
Wu qun Mei · Journal of Projectiles.Rockets.Missiles and Guidance · 2006
There is always containated measurement noise in flight test data,so it is necessary to find a good method to pre-process these data.For such pre-process,this paper proposes a new smoother algorithm,called by us moving-orthogonal polynomial smoother algorithm.Compared with the general polynomial stepless algorithm,this algorithm is somewhat better in avoiding the linear equations when we seek equation roots with the method of reverse matrix.Moving-orthogonal polynomial algorithm can be used to smooth the flight test data and check up the reasonableness of dynamic data.Using this method to pre-process some actual flight test data for angle of pitching and the results confirm the validity of this method.