Solution of the Inverse Problem of Electromagnetic Transmission Probing of the Earth Ionosphere by Gradient Methods

摘要

The method of projecting conjugate gradients on special sets is applied to solving the inverse prob- lem of electromagnetic transmission probing of the Earth's ionosphere by signals from satellite navigation sys- tems. On the basis of numerical simulation, it is shown that the rms error in the determination of the altitude distribution of electron concentration is 2.5/100 of its maximum value. The application of this method to the deter- mine the parameters of the ionosphere is shown to be expedient when the accuracy of range measurements is no worse than 0.3 m.