Slit for Fourier Transforms
- To: mathgroup at yoda.physics.unc.edu
- Subject: Slit for Fourier Transforms
- From: beau at vision.arc.nasa.gov (Andrew B. Watson)
- Date: Fri, 5 Nov 93 14:36:59 PST
> Hi there > > I got some questions regarding the Fourier.m Pckage of Mma. > > 1. How do I generate a function representing a slit as an apertures, so that > Mma's FourierTransform is able to deal with it explicitly. > > Andreas Wouldn't the DiracDelta funtion work for a one-dimensional, infinitley narrow slit? If you want a slit of width w, centered at 0, try slit[x_,w_] := UnitStep[x+w/2] - UnitStep[x-w/2] Two-dimensional extensions should be obvious. Andrew B. Watson MS 262-2 NASA Ames Research Center Moffett Field CA 94035-1000 (415) 604-5419 -3323 fax beau at vision.arc.nasa.gov