| APPLICATION OF FRACTAL THEORY IN TRANSIENT CHAOTIC SIGNAL DETECTION |
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| 作者姓名： | 何万迅 施文康 |
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| 作者单位： | Inst. of Automatic Detection，Shanghai Jiaotong Univ.，Shanghai 200030，China |
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| 摘 要： | Introduction It is recently declared that heart period signal( HPS) is one sort of chaotic signal1,2 ] . HPS istime variant,it changes seriously with the changeof time. So HPS is one typical sort of transientchaotic signal. In general,the signal detectedthrough electrocardiograph( ECG) is the combina-tion of heart period signal ( HPS) and noise ( NS) .For noise,the cause and background are hard toexplain,and sometimes it also changes seriouslywith the change of time.So such a prob…
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APPLICATION OF FRACTAL THEORY IN TRANSIENT CHAOTIC SIGNAL DETECTION |
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| HE Wan xun,SHI Wen kang.APPLICATION OF FRACTAL THEORY IN TRANSIENT CHAOTIC SIGNAL DETECTION[J].Journal of Shanghai Jiaotong university,2002,7(1):4-7. |
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| Authors: | HE Wan xun SHI Wen kang |
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| Institution: | Inst. of Automatic Detection, Shanghai Jiaotong Univ., Shanghai 200030, China |
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| Abstract: | According to the definition of correlation dimension in fractal theory, this paper presented a method to determine and assess noise part in detected transient signal. Such work is essential to decrease the noise part in the detected signal. It is proved that heart period signal (HPS) is one typical sort of transient chaotic signal. Through experiment and simulation, the analysis of chaotic HPS in the detected signal was done. In the end, we deepen the researches on attractor dimension of HPS for persons who are different in age. |
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| Keywords: | fractal correlation dimension chaos attractor dimension heart period signal electrocardiograph |
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