Derivation of a discrete Fourier transform using higher order integration and prime factorization for application to conjugate gradient FFT methods
Conference
Peters, TJ, Volakis, JL. (1988). Derivation of a discrete Fourier transform using higher order integration and prime factorization for application to conjugate gradient FFT methods
. 1 96-98.
Peters, TJ, Volakis, JL. (1988). Derivation of a discrete Fourier transform using higher order integration and prime factorization for application to conjugate gradient FFT methods
. 1 96-98.
It is shown how a conjugate gradient-fast Fourier transform (CG-FFT) method may be improved by a faster and/or more accurate specialized FFT using a piecewise Lagrange polynomial expansion. The formulas presented allow use of a prime-factor FFT and are more accurate than using a standarg FFT by itself.
