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Generation of VLF waves in the ionosphere with coherent dual‐site excitation
Author(s) -
Wong A. Y.,
Wei E.,
Pau J.
Publication year - 2007
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 - 10.1029/2005rs003326
Subject(s) - ionosphere , physics , wavelength , observatory , excitation , interference (communication) , radio wave , very low frequency , plasma , geophysics , computational physics , optics , astrophysics , telecommunications , astronomy , channel (broadcasting) , quantum mechanics , computer science
High Power Auroral Stimulation (HIPAS) Observatory and High Frequency Active Auroral Research Program (HAARP) are two radiating facilities in the Arctic region separated by a distance of the order of VLF wavelengths. The current‐carrying plasma in the E region of the ionosphere above each facility can be modulated to radiate VLF waves via HF heating. Experiments demonstrated that VLF waves can be coherently excited by these two facilities through constructive interference that is sensitive to the phase difference between these two sources.