An adaptive time-frequency filtering method for nonstationary signals based on the generalized S-transform |
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Authors: | Dian-wei Wang |
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Affiliation: | WANG Dian-wei1,LI Yan-jun1,ZHANG Ke1,, XU Huan-min2 1.School of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China 2.Radar Tracking Station,Jiuquan Satellite Launch Centre,Jiuquan 735000,China |
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Abstract: | Aiming at the serious interference of the cross term existing in the time-frequency(TF) filtering method,an adaptive TF filtering method for nonstationary signals based on the generalized S-transform is proposed.Firstly the time-frequency distribution spectrum of the signal is got by the generalized S-transform,then the clustered energy of the signal on the timefrequency plane is identified by the TF region extraction algorithm,thirdly the TF filtering factor is constructed based on the distribution charact... |
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