CAJ | 학술논문

针对待测时间序列是来自周期信号源、混沌信号源还是随机信号源的问题,提出一种用符号谱定性判定的方法.先对时间序列量化,然后进行编码,继而绘其符号谱.通过对不同类型时间序列的符号谱的对比分析表明,符号谱比K-S熵和功率谱等其他方法更能简单有效地判定时间序列的确定性来源和模式类型.
침대대측시간서렬시래자주기신호원、혼돈신호원환시수궤신호원적문제,제출일충용부호보정성판정적방법.선대시간서렬양화,연후진행편마,계이회기부호보.통과대불동류형시간서렬적부호보적대비분석표명,부호보비K-S적화공솔보등기타방법경능간단유효지판정시간서렬적학정성래원화모식류형.
In view of whether the time series comes from periodic,chaotic or random source,a qualitative method with symbolic spectrum is proposed.In this method,the time series is quantized firstly,then is coded and its symbolic spectrum is plotted.Several symbolic spectrums of different type of time series show that,symbolic spectrum can identify the deterministic source and pattern of time series simply and effficiently,better than K-S entropy and power spectrum.