• Boguta, N. M., V. A Ivanov, Y. V. Noga, N. V. Ryabova, I. V. Ryabov, V. P. Uryadov, V. V. Shumaev, Use of ionosondes in adaptive HF communication system, in Russian, Radiotekhnika, 4, 7779, 1993.
  • Bryunelli, B. E., A. A. Namgaladze, Physics of Ionosphere, in Russian, 528, Nauka, Moscow, 1988.
  • Chasovitin, Y. K., et al., Global model of distribution of electron density, temperature and effective frequency collisions in the ionosphere, in Russian, Ionos. Invest., 44, 613, 1988.
  • Edwin, A., Direct digital synthesis applications, Microwave J., 331, 149151, 1990.
  • Fatkullin, M. N., T. N. Zelenova, V. K. Kozlov, A. F. Legenka, T. N. Soboleva, Empirical Midlatitude Ionospheric Model, in Russian, 2592, Nauka, Moscow, 1981.
  • Fenwick, R. B., Oblique chirp sounder: The HF communications test set, Commun. News, 112, 3233, 1974.
  • Harnish, L. O., G. H. Hagn, A comparison of MOF factors and frequency of optimum transmission bands observed using oblique incidence sounders with sounder-updated PROPHET predictions for a one-month test in the continental United States during the geomagnetically active summer of 1982, Radio Sci., 203, 269279, 1985.
  • Ivanov, V. A., V. P. Uryadov, V. A. Frolov, V. V. Shumaev, Oblique sounding of the ionosphere by continuous linear frequency modulation (in Russian), Geomagn. Aeron., 301, 107112, 1990.
  • Ivanov, V. A., Y. B. Maliyshev, Y. V. Noga, S. A. Terekhov, V. P. Uryadov, V. V. Shumaev, Automatic chirp sounder for ionospheric investigations, in Russian, Radiotekhnika, 4, 6972, 1991.
  • Mc Cune, E., Create signals having optimum resolution, response, and noise, Electrical Design News, 366, 95102, 1991.
  • Polyakov, V. M., V. E. Sukhodolskaya, M. K. Ivelskaya, G. E. Sutirina, G. V. Shapranova, Semiempirical Ionospheric Model, in Russian, 112, Vsesoyusny Inst. Nauchnoi i Tekh. Informazii (VINITI), Moscow, 1978.
  • Reilly, M. H., M. Daehler, Sounder updates for statistical model predictions of maximum usable frequencies on HF sky wave path, Radio Sci., 216, 10011008, 1986.
  • Sojka, I. J., R. W. Schunk, A theoretical study of the global F region for june solstice, solar maximum, and low magnetic activity, J. Geophys. Res., 90A6, 52855298, 1985.
  • Tascione, T. F., T. W. Flattery, V. G. Patterson, J. A. Secan, J. W. Taylor, Ionosperic modelling at airforce global weather central, Solar-Terrestrial Predictions ProceedingsR. F. Donnely, 1, 367377, U.S. Dep. of Comm., Washington, D.C., 1979.