离散Wigner分布的坐标变换和数字实现

The Coordinate Transformations and Digital Implementations of Discrete Wigner Distribution

离散Wigner分布(DWD)是信号在离散时域和离散频域上的二维表示。本文推导了它的坐标变换关系和数字实现方法,提出了时变频谱的实时分析方法。实验结果表明,它是进行时变频谱分析的有力工具。

The discrete Wigner distribution (DWD) is a two dimensional representation of a signal in discrete time dimension and discrete frequency dimension. Its coordinate transformation relationships and digital implementation are derived in this paper. The real-time methods for time varying frequency sp(?)ctral analysis are presented It is demonstrated by the experimental results that the DWD is a important tool for analyzing time varying frequency spectral.