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RADIO SCIENCE, VOL. 40, RS1003, doi:10.1029/2004RS003097, 2005

Propagation model for transionospheric fluctuating paths of propagation: Simulator of the transionospheric channel

Vadim E. Gherm

Research Institute of Radio Physics, University of St. Petersburg, St. Petersburg, Russia


Nikolay N. Zernov

Department of Radio Physics, University of St. Petersburg, St. Petersburg, Russia


Hal J. Strangeways

School of Electronic and Electrical Engineering, University of Leeds, Leeds, UK


Abstract

A new model for scintillation on transionospheric links, based on a hybrid method and valid for strong scintillations, has been developed and used to construct a software transionospheric channel simulator. The method is a combination of the complex phase method and the random screen technique. The parameters of the random screen are determined as the result of a rigorous solution to the problem of propagation inside the ionosphere using the extended Rytov approximation (the complex phase method). The random two-dimensional spatial spectrum at the screen is then transferred down to the Earth's surface employing the rigorous relationships of the random screen theory. Thus the complex phase method can adequately introduce a random screen below the ionosphere for L-band frequencies. The technique is capable of producing statistical characteristics and simulating time realizations of the field for a wide range of input parameters. Preliminary results are presented for both weak and strong scintillations.

Received 22 May 2004; accepted 3 November 2004; published 22 January 2005.

Keywords: scintillations; simulator; transionospheric.

Index Terms: 0659 Electromagnetics: Random media and rough surfaces; 2439 Ionosphere: Ionospheric irregularities; 6934 Radio Science: Ionospheric propagation (0689, 2487, 3285, 4275, 4455); 6964 Radio Science: Radio wave propagation; 6979 Radio Science: Space and satellite communication.

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Citation: Gherm, V. E., N. N. Zernov, and H. J. Strangeways (2005), Propagation model for transionospheric fluctuating paths of propagation: Simulator of the transionospheric channel, Radio Sci., 40, RS1003, doi:10.1029/2004RS003097.