摘要
传统的信号检测对信号非线性的处理方法是以线性来近似 ,忽略信号的非线性特性。本文从分析铁路移频信号 (FSK)的分形特征出发 ,以相空间重构的相关维数来近似分形维数 ,并且以相关维数检测信号 ,对仿真FSK信号和实际采集 FSK信号的检测均取得很好的效果。
Traditional signal detection for nonlinear signal is always implemented by linear ways, and the nonlinear characteristic of signal is always ignored. This paper analyzed fractal characteristic of FSK signal used in railway, calculated relation dimension which is close to fractal dimension by reshaping dimension. We detected signal according to relation dimension , and got satisfactory results by applying to the simulated FSK signal and the real FSK signal on practice.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2001年第5期50-53,共4页
Journal of the China Railway Society
基金
国家教育部博士点基金资助 (2 0 0 0 0 0 0 4 1 2 )
铁道部专项基金资助 (J2 0 0 0 Z0 1 8)
