Measurements of trans-ionospheric propagation parameters in the polar-cap ionosphere. Final report, October 1982-November 1986
Technical Report
·
OSTI ID:5162405
Measurements of absolute TEC (Total Electron Content), were made for the first time from the polar-cap station located at Thule, Greenland in early 1984 using dual-frequency group delay measurements from high orbit satellites. Measurements of L-band amplitude scintillation and dual-frequency differential carrier-phase scintillation were also made. The variability of the TEC was extremely large, with increases above the background values of more than 100% observed frequently. Quasi-periodic TEC enhancements with periods as short as 10 min and with amplitudes exceeding 10**17 el/m**2 column were seen over several time intervals of more than two hours. The absolute values of TEC observed in the dark polar-cap ionosphere at times exceeded the diurnal maximum values from the mid-latitude ionosphere during this initial period of observations.
- Research Organization:
- Air Force Geophysics Lab., Hanscom AFB, MA (USA)
- OSTI ID:
- 5162405
- Report Number(s):
- AD-A-189446/8/XAB; AFGL-TR-87-0121
- Country of Publication:
- United States
- Language:
- English
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