Accession Number:

AD0829842

Title:

An Evaluation of VLF Daytime Propagation Parameters Using a Multi-Frequency Sounder

Descriptive Note:

Technical Report

Corporate Author:

NAVAL WEAPONS CENTER CORONA LABS CA CORONA United States

Personal Author(s):

• Hildebrand,Verne E.
• Morfitt,David G.

Report Date:

1968-03-30

Pagination or Media Count:

74.0

Abstract:

An oblique incidence VLF ionospheric sounder system gives a means of obtaining multi-frequency amplitude and phase measurements in the VLF band simultaneously at up to 10 frequencies over a single propagation path. The analysis presented in this report is an attempt 1 to determine the degree of correlation obtainable between experimental sounder data and predicted results from existing theoretical models for VLF propagation, 2 to determine the variability of propagation parameters derived from the experimental data, and 3 to compare theoretical model parameters which best describe experimental results with previously published findings.

Descriptors:

• (IONOSPHERIC PROPAGATION
• VERY LOW FREQUENCY)
• DIURNAL VARIATIONS
• ATMOSPHERIC SOUNDING
• ELECTRON DENSITY
• PHASE(ELECTRONICS)
• EXPERIMENTAL DATA
• CORRELATION TECHNIQUES
• THEORY
• MATHEMATICAL MODELS
• PROPAGATION

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE