We propose a method and an algorithm for recovery of the nonmonotonic altitude profile of the plasma frequency using the model data on oblique sounding of a spherically layered isotropic ionosphere in the piecewise-quasiparabolic approximation of the altitude profile of the electron number density. The algorithm has been tested with a fairly complex ionosphere model allowing for the E, F1, and F2 layers and the E–F1 interlayer valley. This method was used to recover the effective altitude profile of the plasma frequency at the midpoints of the Khabarovsk–Tory, Magadan–Tory, Norilsk–Tory, and Usolie–Tory paths from the experimental ionograms having a gap in the single-hop mode traces.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 56, No. 7, pp. 443–457, July 2013.
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Mikhailov, S., Grozov, V. Recovery of the Nonmonotonic Altitude Profile of the Plasma Frequency Based on the Ionospheric Oblique Sounding Data. Radiophys Quantum El 56, 399–412 (2013). https://doi.org/10.1007/s11141-013-9443-z
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DOI: https://doi.org/10.1007/s11141-013-9443-z