电子科发女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC 4.Fourier Transform of Functions of One Continuous Variable Fourier transform (FT)of a continuous variable ft) (=F()=()ed .The inverse Fourier transform (IFT)of F(u) F-()-F(( ) ( ) ( ) j t 2 f t F f t e dt   + − −  = =      ( ) ( ) ( ) 1 2j t F f t F e d     + − −  = =      4. Fourier Transform of Functions of One Continuous Variable ◼ Fourier transform (FT) of a continuous variable f(t) ◼ The inverse Fourier transform (IFT) of F(u)