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Comparison of Methods for Calculating LF and VLF Reflection Coefficients
Author(s) -
Gambill Burt
Publication year - 1968
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1002/rds196839954
Subject(s) - reflection (computer programming) , reflection coefficient , ionosphere , radio wave , magnitude (astronomy) , computational physics , ionospheric reflection , optics , mathematics , physics , computer science , geophysics , telecommunications , ionospheric absorption , programming language , astronomy
This paper compares methods for computing reflection coefficients for LF and VLF radio waves that are obliquely incident on a horizontally stratified medium. A recursive technique requiring a digital computer is used for reference calculations. This method is compared with two approximate methods that are suitable for use with hand or graphical calculations. Ionospheric profiles that result in reflection from very diffuse and depressed regions are considered. It is shown that for a great variety of disturbed conditions, the approximate techniques are adequate for predicting reflection coefficient magnitude.