Two-frequency method for probing of ionospheric resonance inhomogeneities
Keywords:two-frequency probing, ionosphere, resonance inhomogeneities, Lorenz curve, two-frequency oscillation generator
AbstractThe paper studies principles of ionospheric irregularities probed using polyharmonic signals on the example of the two-frequency oscillation which is a beat signal. Authors have considered the interaction of a symmetrical two-frequency signal with an abstract resonant circuit which shows the normalized frequency dependence of the reflection coefficient, typical for resonant inhomogeneities in the form of a periodic structure in the ionosphere.
E. A. Benediktov, V. V. Belikovich, N. V. Bakhmet'eva, A. V. Tolmacheva, “Artificial periodic inhomogeneities of the ionosperic plasma as a promising line in the ionospheric research,” Radiophys. Quantum Electron., vol. 45, no. 5, p. 343-357, 2002. DOI: http://doi.org/10.1023/A:1019671925410.
O. G. Morozov, A. A. Talipov, G. A. Morozov, V. G. Kupriyanov, “Characterization of stimulated Mandelstam-Brilloun scattering spectrum using a double-frequency probing radiation,” Proc. SPIE, vol. 8787, 878709, 2012. DOI: http://doi.org/10.1117/12.2017835.
O. G. Morozov, O. G. Natanson, D. L. Aibatov, G. I. Ilyin, E. A. Kalatcheva, “Two-frequency analysis of fiber-optic structures,” Proc. SPIE, vol. 6277, 62770E, 2006. DOI: http://doi.org/10.1117/12.692970.
O. G. Morozov, A. A. Talipov, M. R. Nurgazizov, P. E. Denisenko, A. A. Vasilets, “Instantaneous frequency measurement of microwave signals in optical range using ‘frequency-amplitude’ conversion in the π-phase-shifted fiber Bragg grating,” Proc. SPIE, vol. 9136, 91361B, 2014. DOI: http://doi.org/10.1117/12.2051126.