DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
AD0753206
Title:
A Comparison of Measured and Calculated VLF Phase Velocities for Day and Night.
Corporate Author:
NAVAL ELECTRONICS LAB CENTER SAN DIEGO CALIF
Report Date:
1972-10-20
Abstract:
Measurements of phase velocity at vlf are made using separated time- and phase-synchronized receivers to obtain phase differentials, and such measurements are compared with theoretical values. Daytime measurements of vlf phase velocity are found to be in good agreement with theoretical values, within the accuracy permitted by the known distance between the receiving sites and an assumed horizontally homogeneous ionospheric model. It is also determined that measured values of phase velocity at night and also at transition times sunrise and sunset cannot be effectively compared with theoretical values unless a time-varying ionospheric model is employed. Author
Descriptive Note:
Technical document Oct 71-Apr 72,
Pages:
0044
File Size:
0.00MB
