Modelling of returned trajectories at heights below the maximum of the F2 layer
Modelling of returned trajectories at heights below the maximum of the F2 layer
- Author(s): K.A. Alferov
- DOI: 10.1049/cp:20060283
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- Author(s): K.A. Alferov Source: 10th IET International Conference on Ionospheric Radio Systems and Techniques (IRST 2006), 2006 p. 273 – 275
- Conference: 10th IET International Conference on Ionospheric Radio Systems and Techniques (IRST 2006)
- DOI: 10.1049/cp:20060283
- ISBN: 0 86341 659 4
- Location: London, UK
- Conference date: 18-21 July 2006
- Format: PDF
Radiosounding experiments aboard the "Mir" manned space station resulted in ionograms with retarded lower traces (RLT) (N.P. Danilkin, 2001). These unique traces can be explained as traces of trajectories which are irradiated from a satellite and after an inclined reflection from Earth come back to the satellite as a result of their sharp deviation by the irregularity in the ionosphere (returned trajectories). These trajectories require detailed research, which can be achieved by means of mathematical modeling. By varying positions of the satellite and the irregularity, it is possible to define optimal conditions of getting such trajectories in process of transionospheric radiosounding. The results of such an analysis are presented in the paper. Haselgrove method of ray tracing, also known as the method of characteristics was used (J. Haselgrove, 1955). The characteristic differential equations were handled by the method of Runge-Kutte. The detailed classification of calculated returned trajectories is presented in the paper, the dependence of each trajectory type on the position of the satellite and irregularity relative to each other and relative to the maximum of the F2 layer is shown.
Inspec keywords: Runge-Kutta methods; F-region; radiowave propagation; differential equations; artificial satellites; ionospheric electromagnetic wave propagation; ray tracing
Subjects: Numerical approximation and analysis; Differential equations (numerical analysis); Radiowave propagation; Ionospheric electromagnetic wave propagation; F-region
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