Abstract
The Wigner distribution function describes a signal in space and (spatial) frequency simultaneously and can be considered as the local frequency spectrum of the signal.Although derived in terms of Fourier optics the description of a signal by means of its Wigner distribution function closely resembles the ray concept in geometrical optics.The Wigner distribution function is used in signal processing,face lifting for beam of light,design of filter,and so on. And they all have their own advantage.Summarize the methods about the implement of the wigner distribution function . Illustrate the principle and frame of the light road.
Keywords: The Wigner distribution function ;Application;optical implementation