| New time-“frequency rate” distribution for polynomial phase signal |
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| 引用本文： | 张云,姜义成,王勇,刘瑞华.New time-“frequency rate” distribution for polynomial phase signal[J].哈尔滨工业大学学报(英文版),2010,17(6):880-883. |
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| 作者姓名： | 张云 姜义成 王勇 刘瑞华 |
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| 作者单位： | [1]Institute of Electronic Engineering Technology, Harbin Institute of Technology, Harbin 150001, China [2]College of Electronic Information Engineering, Civil Aviation University of China, Tianjin 300300, China |
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| 基金项目： | Sponsored by the National Natural Science Foundation of China（ Grant No. 60872100 ）, and the National High Technology Research and Development Program of China （ Grant No. 2006AA 12Z313 ）. |
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| 摘 要： | Time-"frequency rate" distribution(TFRD)is an extension of the traditional time-frequency distribution(TFD),and it exploits the relationship between time and frequency rate,or the second order phase derivative of signal.A new TFRD highly concentrated along the frequency rate of polynomial phase signal(PPS)is presented,which provides a new way to PPS.It has been defined by introducing signal with a complex argument in the time-"frequency rate" analysis,and the inner interferences caused by the nonlinearity of the signal’s phase can be reduced greatly with high time-frequency concentration.Implementation of the TFRD is discussed and the results are demonstrated by the application for accelerated target imaging of synthetic aperture radar(SAR).
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| 关 键 词： | TFRD PPS Complex argument synthetic aperture radar |
New time-"frequency rate" distribution for polynomial phase signal |
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| ZHANG Yun,JIANG Yi-cheng,WANG Yong and LIU Rui-hua.New time-"frequency rate" distribution for polynomial phase signal[J].Journal of Harbin Institute of Technology,2010,17(6):880-883. |
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| Authors: | ZHANG Yun JIANG Yi-cheng WANG Yong and LIU Rui-hua |
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| Affiliation: | Institute of Electronic Engineering Technology,Harbin Institute of Technology,Harbin 150001,China;Institute of Electronic Engineering Technology,Harbin Institute of Technology,Harbin 150001,China;Institute of Electronic Engineering Technology,Harbin Institute of Technology,Harbin 150001,China;College of Electronic Information Engineering,Civil Aviation University of China,Tianjin 300300,China |
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| Abstract: | Time-"frequency rate" distribution(TFRD)is an extension of the traditional time-frequency distribution(TFD),and it exploits the relationship between time and frequency rate,or the second order phase derivative of signal.A new TFRD highly concentrated along the frequency rate of polynomial phase signal(PPS)is presented,which provides a new way to PPS.It has been defined by introducing signal with a complex argument in the time-"frequency rate" analysis,and the inner interferences caused by the nonlinearity of the signal' s phase can be reduced greatly with high time-frequency concentration.Implementation of the TFRD is discussed and the results are demonstrated by the application for accelerated target imaging of synthetic aperture radar(SAR). |
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| Keywords: | TFRD PPS Complex argument synthetic aperture radar |
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