TWO-FREQUENCY PHASE METHOD OF DETERMINING SIGNALS DELAY OF A NAVIGATION SATELLITE SYSTEM IN THE IONOSPHERE Russian patent published in 2020 - IPC G01S19/07 

FIELD: satellite navigation.

SUBSTANCE: invention relates to satellite navigation and is intended to determine delay of signals of global navigation satellite systems (GNSS) in ionosphere using two-frequency navigation equipment of consumer (NAC). Said result is achieved due to that, first, when calculating vertical (zenith) delay of signals of the navigation satellite system and inclined signal delays in the ionosphere of each visible NSC, increments of the inclined factor and phase pseudo-ranges measured in the ranges L1 and L2 are used, on the time interval M limited by the permissible error value of approximation of the measured increments by a linear relationship, then the slope delay of the signal in the ionosphere for each j-th NSC is calculated.

EFFECT: high accuracy of navigation measurements owing to reduced error in estimating delay of signals of navigation satellite systems in the ionosphere.

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