METHOD OF DETERMINING PROPAGATION SPEED AND DIRECTION OF ARRIVAL OF IONOSPHERIC DISTURBANCE Russian patent published in 2010 - IPC G01S13/95 

FIELD: physics.

SUBSTANCE: invention relates to radiophysics and can be used in missile defense systems and airspace monitoring. Time series of complete electronic content obtained from measurements of double frequency receivers of satellite radio navigation systems GLONASS/GPS, which form an extended reception array, are filtered to separate variations corresponding to response of the ionosphere to effect of a source. Hypotheses of direction of arrival and speed of propagation values of a plane front of ionospheric disturbance are verified by forming a directional pattern of the reception array and its scanning in the given "direction of arrival - propagation speed" scan sector through synthesis of an output signal of the reception array with coherent summation of variations of series of complete electronic content of separate elements of the array with time shifting, calculated from verified values of propagation speed and direction of arrival of ionospheric disturbance and distance traversed by the front of ionospheric disturbance between elements of the reception array in the verified direction inside the spherical sphere of the ionosphere of the Earth. Correctness of the verified hypothesis and detection of inospheric disturbance is indicated by the total signal exceeding a given threshold value. Corresponding values of direction of arrival and phase speed of propagation of the ionospheric disturbance are estimated values.

EFFECT: increased sensitivity of detection and accuracy of determining propagation speed and direction of arrival of ionospheric disturbance detected by an extended array of reception stations of satellite radionavigation systems GLONASS/GPS.

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