基于S-变换的水中目标特征提取
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摘要
介绍了一种相对较新的联合时频分析方法——S-变换法,并利用S-变换对水中目标信号的相位特征和局部谱进行提取。列举了一些联合时频分析的应用例子,证明了此法对水中目标特征提取的有效性。
A comparatively new method of joint time-frequency analysis is introduced in this paper.Using the S-transform,the local spectral characteristics and phase features of the underwater targets are extracted.Some application examples are presented and this method is proved effective.
A comparatively new method of joint time-frequency analysis is introduced in this paper.Using the S-transform,the local spectral characteristics and phase features of the underwater targets are extracted.Some application examples are presented and this method is proved effective.
引文
[1]张贤达,保铮.非平稳信号分析与处理[M].北京:国防工业出版社,1998.
[2]STROCKWELL R G,MANSINHA L,LOWE R P.Locali-zation of the complex spectrum:the S-transform[J].IEEE Transactions on Signal Processing,1996,44(4):998-1001.
[3]LIVANOS G,RANGANATHAN N,JIANG J.Heart sound analysis using the S-transform[J].Computers in Cardiology,2000,27:587-590.
[4]ROBERT P C,MANSINHA L.The S-transform with win-dows of arbitrary and varying shape[J].Geophysis,2003,68(1):381-385.
[5]MANSINHA L,STOCKWELL R G,LOWE R P,et al.Local-spectrum analysis of1-D and2-D data[J].Physics of the Earth and Planetary Interiors,1997,103:329-336.
[6]VARANINI M,PAOLIS D G,EMDIN M,et a1.Spectral a-nalysis of cardiovascular time series by the S-transform[J].IEEE Comp Cardiology,1997,24(3):383-386.
[7]邹文,陈爱萍,顾汉明.联合时频分析技术在地震勘探中的应用[J].勘探地球物理进展,2004,27(4):246-250,259.
[8]刘庆云,李志瞬.小波变换的局部谱特征[J].电声基础,2004,1:9-11.
[2]STROCKWELL R G,MANSINHA L,LOWE R P.Locali-zation of the complex spectrum:the S-transform[J].IEEE Transactions on Signal Processing,1996,44(4):998-1001.
[3]LIVANOS G,RANGANATHAN N,JIANG J.Heart sound analysis using the S-transform[J].Computers in Cardiology,2000,27:587-590.
[4]ROBERT P C,MANSINHA L.The S-transform with win-dows of arbitrary and varying shape[J].Geophysis,2003,68(1):381-385.
[5]MANSINHA L,STOCKWELL R G,LOWE R P,et al.Local-spectrum analysis of1-D and2-D data[J].Physics of the Earth and Planetary Interiors,1997,103:329-336.
[6]VARANINI M,PAOLIS D G,EMDIN M,et a1.Spectral a-nalysis of cardiovascular time series by the S-transform[J].IEEE Comp Cardiology,1997,24(3):383-386.
[7]邹文,陈爱萍,顾汉明.联合时频分析技术在地震勘探中的应用[J].勘探地球物理进展,2004,27(4):246-250,259.
[8]刘庆云,李志瞬.小波变换的局部谱特征[J].电声基础,2004,1:9-11.
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