Eliminating Abnormal Data in Apparent Velocity of Telemetry based on Wavelet Network
Dong Yu · Dalian Minzu Xueyuan xuebao · 2009
A new method for eliminating the abnormal data in apparent velocity of telemetry based on wavelet network combined with 3 σ-rule is proposed in this paper,which can improve the quality of the data and ensure the separation precision of the guidance instrument systematic error.The training samples of wavelet network are achieved by adding time window to the apparent velocity data,and the abnormal data can be recognized according to 3 σ-rule and be replaced by one-step predictive output of the network.The results of test data processing show the feasibility of this method,and for the fitting effect of wavelet network,the SNR can be increased.