METHOD FOR DETERMINING ORTHOGONAL COMPONENTS OF VELOCITY VECTOR AND METHOD FOR DETERMINING SPACE VEHICLE COORDINATES USING EARTH STATIONS Russian patent published in 2021 - IPC G01S5/00 B64G3/00 G01C21/24 G01S3/46 G01S13/58 G01S19/03 

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 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 (3C) I_n after their retransmission by the main S₁ and adjacent S₁ spacecraft, respectively, calculation of the coordinates of the main spacecraft х₁, у₁, z₁, calculation of the orthogonal components of the velocity vector of the main spacecraft The method for determining the coordinates of the main spacecraft х₁, у₁, z₁ includes: measuring in the GRTS K for each n-th 3C I_n values of the time delays Δt_n between the received radio signals after their retransmission by the main S₁and adjacent spacecraft S₂, respectively, calculating the coordinates of the main spacecraft x₁, y₁, z_1.

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

4 cl, 7 dwg, 2 ex