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    • 55. 发明专利
    • Signal processing method and device for signal-to-noise ratio improvement
    • 信号处理方法和信号噪声比改进装置
    • JP2007209782A
    • 2007-08-23
    • JP2007102760
    • 2007-04-10
    • Conmed Corpコンメド コーポレイション
    • WASSERMAN YORAM
    • A61B5/145A61B5/1455A61B5/00A61B5/04A61B5/05A61B5/053
    • A61B5/04017A61B5/0535A61B5/1455A61B5/7239
    • PROBLEM TO BE SOLVED: To provide a method and device for processing periodic signal and the signal-to-noise ratio improvement. SOLUTION: The method and device extracts a signal component of a measured signal using one of two methods. If the signal component in the measured signal is a periodic signal with a certain well-defined peak-to-peak intensity, the measured signal is determined as upper and lower envelopes. This signal component can further be used to calculate a desired parameter of the sample. The DC component of the signal is determined as the median value of the upper envelope, and the AC component is determined as the median value of the difference between the upper and lower envelopes. If the signal component of the measured signal is a periodic signal characterized by a specific asymmetric shape, a specific adaptive filtering is applied to the measured signal, resulting in an emphasis of the signal component relative to the noise component. This adaptive filtering is based on a derivative of the Gaussian Kernel having specific parameters matching the characteristics of the signal component. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种用于处理周期性信号和信噪比改进的方法和装置。 解决方案:该方法和装置使用两种方法之一提取测量信号的信号分量。 如果测量信号中的信号分量是具有一定明确的峰 - 峰强度的周期信号,则测量的信号被确定为上和下包络。 该信号分量还可用于计算样品的期望参数。 信号的直流分量被确定为上包络的中值,并且将AC分量确定为上包络和下包络之间的差的中值。 如果测量信号的信号分量是由特定非对称形状表征的周期性信号,则将特定的自适应滤波应用于测量的信号,导致信号分量相对于噪声分量的强调。 该自适应滤波是基于具有与信号分量的特征匹配的特定参数的高斯核的导数。 版权所有(C)2007,JPO&INPIT