Record Display for the EPA National Library Catalog


Main Title Hybrid Fast Hankel Transform Algorithm for Electromagnetic Modeling.
Author Anderson, W. L. ;
CORP Author Geological Survey, Denver, CO.;Environmental Monitoring Systems Lab., Las Vegas, NV.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/495;
Stock Number PB91-146340
Additional Subjects Electromagnetic fields ; Models ; Hankel transformation ; Algorithms ; Hankel functions ; Digital filters ; Electromagnetic testing ; Fourier transformation ; Reprints ; HYBFHT computer program
Library Call Number Additional Info Location Last
NTIS  PB91-146340 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
A hybrid fast Hankel transform algorithm has been developed that uses several complementary features of two existing algorithms: Anderson's digital filtering or fast Hankel transform (FHT) algorithm and Chave's quadrature and continued fraction algorithm. A hybrid FHT subprogram (called HYBFHT) written in standard Fortran-77 provides a simple user interface to call either subalgorithm. The hybrid approach is an attempt to combine the best features of the two subalgorithms in order to minimize the user's coding requirements and to provide fast execution and good accuracy for a large class of electromagnetic problems involving various related Hankel transform sets with multiple arguments. Special cases of Hankel transforms of double-order and double-argument are discussed, where use of HYBFHT is shown to be advantageous for oscillatory kernel functions.