Acta Photonica Sinica, Volume. 43, Issue 12, 1204001(2014)
De-noising of X-ray Pulsar Signal Based on Wavelet-Fisz Transformation
As the phase of X-ray pulsar signal is hard to obtain accurately because of low signal noise ratio, a method of estimation based on Wavelet-Fisz transformation for X-ray pulsar signal was proposed. The signal of X-ray pulsars were folded by an enormous number of photon events. The signal model of X-ray pulsar was constructed. The Wavelet-Fisz transformation was derived. The signal of X-ray pulsars were preprocessed to Gaussian distribution by Wavelet-Fisz transformation, then the approximated signal was estimated. Several observation data of RXTE were analyzed, the results show the proposed method has a good performance of estimation, with low overhead of time under Wavelet-Fisz transformation, and is suitable for engineering application of X-ray pulsar navigation.
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LIU Xiu-ping, JING Jun-feng, SUN Hai-feng, HAN Li-li. De-noising of X-ray Pulsar Signal Based on Wavelet-Fisz Transformation[J]. Acta Photonica Sinica, 2014, 43(12): 1204001
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Received: Apr. 21, 2014
Accepted: --
Published Online: Dec. 26, 2014
The Author Email: Xiu-ping LIU (liuxiuping8@126.com)