Interpretation of VLF phase data
Abstract
The specific applications of very low frequency phase tracking are described. The requirements for correct interpretation of very low frequency phase data are defined. The effects of the lower ionosphere and the ground along the path of signal propagation are analyzed. The following subjects are discussed: (1) interpretation equipment, (2) representation of very low frequency waves, (3) diurnal effects and mode interference phenomena, (4) antipodal interference, and (5) overall effects resulting from solar flares, galactic X-rays, and geomagnetic parameters.
- Publication:
-
4th Precise Time and Time Interval Planning Meeting
- Pub Date:
- November 1972
- Bibcode:
- 1972ptti.nasa..324R
- Keywords:
-
- Electromagnetic Wave Transmission;
- Ionospheric Propagation;
- Very Low Frequencies;
- Diurnal Variations;
- Electromagnetic Interference;
- Extraterrestrial Radiation;
- Solar Flares;
- Communications and Radar