Analysing the Physics Significance of Fourier Tranform by Diffraction Light Path
HAN Zhi-tian YANG Lei(Information Engineering School,Beijing Boardcasting Institute,Beijing 100024 P. R. China)
This article analyse the physics signification of Fourier transform by Hugens principle and Fraunhofer diffraction. It also discuss the differences between the spectrum picture producde by diffraction and the spectrum picture educed by Fourier transform and the different coefficient on coordinates, the differences between the time signal and the spatial signal and the physics signification of frenquency spectrum picture.
【CateGory Index】： O438.2