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 

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 and of the received radio signals of n-th earth stations (ЗС) I_n, after their retransmission by the main S1 and adjacent S1 spacecraft, respectively, radiation of the test radio signal using the GRTS, receiving it after retransmission by the main S1 spacecraft and measuring its frequency , calculation of the radial velocity of the main spacecraft relative to the GRTS K, calculation of the coordinates of the main spacecraft x1, y1, z1, calculation of the orthogonal components of the velocity vector of the main spacecraft , , . The method for determining the coordinates of the main х1, у1, z1 includes: measuring in the GRTS for each n-th ЗС I_n 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 it after retransmission by the main spacecraft S1 and measuring the time delays calculating the distance , calculating the coordinates of the main spacecraft х1, у1, z1.

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

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