ARTIFICIAL IONOSPHERIC FORMATION DIRECTION-FINDING APPARATUS Russian patent published in 2014 - IPC G01S13/95 

FIELD: physics.

SUBSTANCE: method includes receiving electromagnetic signals from each navigation satellite, wherein a double-frequency receiver generates an evaluation vector of digital signals corresponding to each of the j=1…m visible navigation satellites; based on phase propagation times τ_ph1,2(t_k), calculating phase paths of the signal D_ph1,2(t_k)=cτ_ph1,2(t_k) for each of the j=1…m visible navigation satellites; determining full electronic content of the ionosphere I, mathematical expectation of the full electronic content of the ionosphere $$\overline{\text{I}}$$ and the mean-square deviation of the full electronic content of the ionosphere σ_ΔI; determining the intensity of ionosphere irregularities; comparing the obtained values of the intensity of ionosphere irregularities β_{i j} with a threshold β_{i thres}; determining all signal passage lines on which high (β_{i j}≥β_{i thres}) intensity of ionosphere irregularities is determined; generating a feature for presence of an artificial ionospheric formations; based on the information contained in navigation messages and coordinates of the double-frequency receiver, determining the bearings of the beginning and end of the artificial ionospheric formation.

EFFECT: high accuracy of determining full electronic content in diffusivity conditions and obtaining information on the state of the ionosphere in a given direction.

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