METHOD OF DETERMINING IONOSPHERE CHARACTERISTICS AND DEVICE FOR REALISING SAID METHOD Russian patent published in 2011 - IPC G01S13/95 

FIELD: physics.

SUBSTANCE: radio signals are received from navigation satellites at two coherent frequencies F1 and F2. Pseudo-ranges D_F1 and D_F2 to the navigation satellite, measured at frequencies F1 and F2 respectively are determined from the received radio signals. The obtained values are used to calculate the difference between pseudo-range values ΔD₁₂. The full electron concentration Le along the "satellite-ground" point route is determined. Electron concentration of the ionosphere N(z) in the region for measuring the altitude profile is determined. Phase values ψF1 and ψF2 of the received radio signals are measured. The difference between pseudo-ranges ΔD₁₂ is determined taking into account phase values ψF1 and ψF2 of the received radio signals. An iterative procedure for solving the inverse problem is applied, where the said procedure is based on using a method of conjugate gradients and a priori information on the background state of the ionosphere to determine electron concentration of the ionosphere N(z) in the region for measuring the altitude profile. The device for determining electron concentration of the ionosphere has an antenna for receiving radio signals from navigation satellites, the output of which is connected to the input of a double-frequency receiver of satellite navigation systems of the GLONASS and/or GPS type. The device also has a processing and display unit whose input is connected to the output of the double-frequency receiver. The processing and display unit is adapted to determine said parameters.

EFFECT: high accuracy and possibility of automating the process of determining ionosphere parameters.

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