Accession Number : ADA133876

Title :   ELF/VLF (Extremely Low Frequency/Very Low Frequency) Long Path Pulse Program for Antennas of Arbitrary Elevation and Orientation.

Descriptive Note : Interim rept. Jan-Aug 83,

Corporate Author : NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA

Personal Author(s) : Pappert,R A ; Hitney,L R ; Ferguson,J A

PDF Url : ADA133876

Report Date : Aug 1983

Pagination or Media Count : 116

Abstract : A computer program designed to handle pulse propagation problems when the propagation channel is the earth-ionosphere waveguide, and intended for use in the elf/vlf bands, is presented. The program is intended for use with laterally homogeneous channels. Allowance is made for transmit and receive antennas of arbitrary elevation and orientation. Mode data as a function of frequency from a waveguide program are required inputs to the present program. The mode data are interpolated by using cubic splines, and the requisite integrals are treated numerically by means of the fast Fourier transform.

Descriptors :   *Ionospheric propagation, *Computerized simulation, *Electromagnetic pulses, *Antennas, Computer programs, Receivers, Dipole antennas, Extremely low frequency, Transmitters, Fast fourier transforms, Very low frequency, Propagation, Earth(Planet), Functions, Elevation, Channels, Paths, Integrals, Ionosphere, Frequency, Homogeneity, Waveguides, Pulses

Subject Categories : Electromagnetic Pulses

Distribution Statement : APPROVED FOR PUBLIC RELEASE