Measuring the Wiener kernels of a non-linear system using the fast Fourier transform algorithm
Andrew S. French, Edward G. Butz · International Journal of Control · 1973
A new method is presented for the measurement of the Wiener kernels of a non-linear system. The method uses the complex exponential functions as a set of orthogonal functions with which to expand the kernels. The fast Fourier transform is then employed in the most efficient measurement of the kernels so far discovered.