Propagation of broadband HF signals in a medium with nonlinear dispersion

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• 作者：D. V. Ivanov ; V. A. Ivanov ; N. N. Mikheeva…
• 刊名：Journal of Communications Technology and Electronics
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：60
• 期：11
• 页码：1205-1214
• 全文大小：620 KB
• 参考文献：1.D. V. Ivanov, Methods and Mathematical Models for the Study of Ionospheric Propagation of Comlicated Decameter Signals and Correction of Dispersion Distortions (MarGTU, Ioshkar-Ola, 2006).
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  12.D. V. Ivanov, V. A. Ivanov, A. R. Lashchevskii, and M. I. Ryabova, Elektromagn. Volny Elektron. Sist. 13 (8), 58 (2008).
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  18.V. A. Ivanov, D. V. Ivanov, A. R. Lashchevskii, and M. I. Ryabova, Vestn. MarGTU, Ser.: Radiotekh. Infokomm. Sist., No. 3(4), 3 (2008).
  19.A. P. Anyutin, Doctoral Dissertation in Mathematics and Physics (MFTI, Moscow, 2008).
  20.V. A. Ivanov, D. V. Ivanov, A. R. Lashchevskii, and M. I. Ryabova, Vestn. Povol. Gos. Technol. Univ., Ser.: Radiotekh. Infokomm. Sist., No. 1(20), 43 (2014).
  
• 作者单位：D. V. Ivanov (1)
  V. A. Ivanov (1)
  N. N. Mikheeva (1)
  N. V. Ryabova (1)
  M. I. Ryabova (1)
  
  1. Volga State University of Technology, pl. Lenina 3, Yoshkar-Ola, 424000, Republic of Mari El Russia
  
• 刊物类别：Engineering
• 刊物主题：Communications Engineering and Networks
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1555-6557

文摘

Effect of nonlinear dispersion on distortions of broadband signals due to propagation in ionospheric channel is considered with allowance for matched processing in detector. Distortions of the shape of pulse response are studied versus nonlinearity parameter, and the effect of geophysical factors on the parameter is analyzed. The pulse response is used to estimate the group delay. It is demonstrated that the problem of propagation of broadband signals is reduced to the analysis of distortions of an equivalent signal with uniform in-phase spectrum in the ionospheric channel similar to the distortions of the pulse response of the channel. For the polynomial dispersion characteristic of the channel, the effect of nonlinearity on the pulse characteristics is described using incomplete Airy functions and the shape of the envelope of such a characteristic becomes asymmetric. Owing to uncertainty, the parameter of the group delay in the channel with the nonlinear dispersion cannot be accurately determined using the data on the pulse characteristic as distinct from the dispersion-free or linear-dispersion channel.