Accession Number : AD0663878

Title :   THEORETICAL VLF MULTIMODE PROPAGATION PREDICTIONS.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Brookes,C. B. , Jr. ; McCabe,J. H. ; Rhoads,F. J.

Report Date : 01 DEC 1967

Pagination or Media Count : 90

Abstract : A computer program in Fortran has been written for the Control Data Corporation (CDC) 3800 computer to predict the field strength of multimode very-low-frequency (vlf) propagation for distances from 0.5 megameters to 15 megameters. Although the propagation parameters used in the computations appear in various forms elsewhere in the literature, the curves presented here can be directly compared with experimental data without further computations. Curves based on the theoretical results for seawater paths are presented for frequencies between 8.0 kc/s and 30.0 kc/s for ionospheric heights of 70 km and 90 km. (Author)

Descriptors :   (*RADIO TRANSMISSION, VERY LOW FREQUENCY), COMPUTER PROGRAMS, RADIO FIELDS, PREDICTIONS, THEORY, RADIO WAVES

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE