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《Journal of Projectiles, Rockets, Missiles and Guidance》 2006-03
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Orthogonal Polynomial for Pre-processing Flight Test Data

YU Jun-cai,AN Jin-wen,WU Mei(Department of Automatic Control of NWPU,Xi'an 710072,China)  
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.
【CateGory Index】: V217
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