ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN 印刷: 0040-2508
ISSN オンライン: 1943-6009

巻:
巻 78, 2019 巻 77, 2018 巻 76, 2017 巻 75, 2016 巻 74, 2015 巻 73, 2014 巻 72, 2013 巻 71, 2012 巻 70, 2011 巻 69, 2010 巻 68, 2009 巻 67, 2008 巻 66, 2007 巻 65, 2006 巻 64, 2005 巻 63, 2005 巻 62, 2004 巻 61, 2004 巻 60, 2003 巻 59, 2003 巻 58, 2002 巻 57, 2002 巻 56, 2001 巻 55, 2001 巻 54, 2000 巻 53, 1999 巻 52, 1998 巻 51, 1997

Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v53.i2.110
pages 58-64

3-D Ray-Tracing Synthesis of Multiparameter Ionograms as Obtained by Digital Sounders in a Disturbed Ionosphere

V. F. Pushin
Kharkov National University, 4, Svobody Square, Kharkov 61077, Ukraine
L. S. Kostrov
V. Karazin National University of Kharkov, 4, Svoboda Sq., Kharkov, 61077, Ukraine

要約

A ray-tracing technique is suggested for synthesizing multiparameter ionograms obtained with digital sounders under disturbed ionospheric conditions. The ionosphere is assumed to be a 3-D inhomogeneous quasi-stationary medium placed in an external magnetic field. The dual-point boundary-value problem for the ray equations is solved by the method of ballistics. The steepest descent method is applied within the approach to solve the set of nonlinear equations. To that end, the ray equations are complemented by equations for their partial derivatives with respect to parameters of the boundary-value problem. The radio wave parameters are given by curvilinear integrals of known functions, taken along the ray connecting two specified points. The extended set is solved numerically. Analytic solutions have been obtained for simplified dispersion relations in the vicinity of reflection points for the O- and X-modes. The numerical and analytic solutions are matched at the edge of the reflecting region. Data bank perturbation models are used for the ionogram synthesis. The regular background model of the ionosphere is corrected through Doppler shift measurements of the VHF signals from satellite radio beacons. The Dopplionograms characteristic of the perturbations like traveling ionospheric disturbances (TIDs) have been obtained. The results are compared with the measurements.


Articles with similar content:

INFLUENCE PRODUCED BY THE MULTIPATH PROPAGATION OF RADIO WAVES ON ACCURACY OF MEASUREMENT OF THE ANGLE OF ELEVATION OF THE LOW-LEVEL RADIATOR USING A ROOT-MUSIC ALGORITHM
Telecommunications and Radio Engineering, Vol.71, 2012, issue 5
Yu. F. Logvinov, V. B. Razskazovsky, Yu. A. Pedenko
Guaranteed Results in Problems of Parametric Identification and Estimation of Vector of State (Filtration) for Slowly Varying Bounded Measurement Noise
Journal of Automation and Information Sciences, Vol.38, 2006, issue 7
Vsevolod M. Kuntsevich
ON THE POSSIBILITY OF RECOVERING SPATIAL DISTRIBUTION OF IONOSPHERIC INHOMOGENEITIES USING DATA FROM IMAGING RIOMETERS
Radio Physics and Radio Astronomy, Vol.3, 2012, issue 4
O. V. Charkina
Applicability of the Isotropic Approximation in the Problem of Frequency-and-Angular Ionospheric Sounding
Telecommunications and Radio Engineering, Vol.61, 2004, issue 2-6
Vladimir G. Galushko, G. V. Lytvynenko
A Resonator for Selection and Shaping of the Fourier Mode with a Uniform Field Amplitude Profile
Telecommunications and Radio Engineering, Vol.57, 2002, issue 10-11
V. A. Svich, Ye.V. Fursova, A. N. Topkov, V. A. Maslov, O. V. Gurin