METHOD FOR DETERMINING ORTHOGONAL COMPONENTS OF VELOCITY VECTORS AND METHOD FOR DETERMINING COORDINATES OF TWO SPACE VEHICLES USING EARTH STATIONS Russian patent published in 2021 - IPC G01S5/00 B64G3/00 G01C21/24 G01S3/46 G01S13/58 

FIELD: cosmonautics.

SUBSTANCE: inventions group relates to the field of cosmonautics, namely to the technique of performing trajectory measurements, determining the coordinates and orthogonal components of the spacecraft velocity vector, and can be used on ground and onboard spacecraft flight control systems to accurately determine the current parameters of the spacecraft movement. The method for determining the velocity vector of the main spacecraft adjacent spacecraft includes: measuring in the ground radio technical station (GRTS) K values of the nominal frequencies of the received radio signals of n-th earth stations (3С) I_n after their retransmission by the main S₁ and adjacent S₂ spacecraft, respectively, radiation of the test radio signal using the GRTS, receiving it after retransmission by the main spacecraft S₁ and adjacent S₂ spacecraft, respectively, and measuring their frequency , calculation of the radial velocity of the main spacecraft and adjacent spacecraft relative to the GRTS K, calculation of the coordinates of the main x1, y1, z1 and adjacent spacecraft x2, y2, z2, calculation of the coordinates of the main spacecraft The method for determining the coordinates of the main х1, у1, z1 and adjacent spacecraft х₂, у₂, z₂ includes: measuring in the GRTS K for each n-th 3C I_n the values of the time delays Δt_n between the received radio signals after their retransmission by the main S₁ and adjacent spacecraft S₂, respectively, radiation test radio signals using the GRTS, receiving them after retransmission by the main spacecraft S₁ and adjacent spacecraft S₂, respectively, and measuring the time delays , calculating the distances from the GRTS to the main and adjacent spacecraft calculating the coordinates of the main spacecraft х₁, у₁, z_1.

EFFECT: increases the accuracy of determining the coordinates and orthogonal components of the velocity vectors of two spacecraft.

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