METHOD OF CALCULATING THE THREE-DIMENSIONAL COORDINATES OF THE AIRCRAFT BY THE RANGE-MEASUREMENT METHOD WITH THE LOCATION OF STATIONS WITH KNOWN COORDINATES ON NON-MOUNTAINOUS TERRAIN Russian patent published in 2019 - IPC G01S5/12 

FIELD: radio engineering; radio navigation.

SUBSTANCE: invention relates to radio engineering, navigation and can be used to determine three-dimensional coordinates of an aircraft using a range-finding method at location of stations with known coordinates on a flat area. System of nonlinear equations is used, which connects unknown coordinates x, y and height h with distances R_n, n = 1, 2, …, N, from aircraft to stations with known coordinates x_n, y_n, n = 1, 2, …, N, in the system of nonlinear equations used, the position of the n-th station is given by a column vector P_n=[x_n, y_n]^T with coordinates x_n, y_n, n = 1, 2, …, N (N≥3), the spatial position of the aircraft is determined by the vector P=[x, y]^T with coordinates x, y and height h, then, transition from system of equations with three-dimensional coordinates to system with two-dimensional coordinates is performed, height of aircraft is determined from system of equations with two-dimensional coordinates.

EFFECT: high accuracy of determining coordinates of an aircraft.

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