Theoretical study for the power distribution of the Fourier transform in the spatial frequency domain

摘要

Fourier transforms represent an important tool in applied mathmatics . The first yield of its application was in electrical engineering , communications and temporal signal processing . In this work the diffractive properties of a biconvex lens is utilized in a comparative study of the Fourier transform in two dimensional spatial domain .The work includes theoretical calculations of the (2-D) Fourier transforms for certain geometrical object function in the spatial domain . The theoretical calculations made use of the MATLAB? software in creating the aperture's geometry and then calculating its Fourier transform .The digital camera have been utilized to record the experimental results is a (CCD ) camera to record the power distribution of the Fourier transform in the spatial frequency domain .