METHOD FOR DETERMINING THE ORTHOGONAL COMPONENTS OF THE VELOCITY VECTOR OF A SPACECRAFT USING AN EARTH STATION AND A RADIATING REFERENCE REFERENCE STATION Russian patent published in 2023 - IPC G01S5/00 B64G3/00 G01C21/24 G01S3/46 G01S13/58 G01S19/03 

FIELD: cosmonautics.

SUBSTANCE: invention relates to the field of cosmonautics, namely to the technique of performing trajectory measurements and determining the parameters of the orbit of a spacecraft (spacecraft), and is intended for use on ground and on-board spacecraft flight control systems to accurately determine the current parameters of spacecraft motion. In the claimed method, the transmission and reception of test radio signals is carried out by a receiving and transmitting radio engineering station (PPRTS), the selection of Earth stations (ZS) and the placement of the PPRTS, the radiating reference reference station (IORS) so that the mutual distances between them are maximum, and their coordinates would simultaneously be in the coverage areas of the main spacecraft and adjacent spacecraft in time point t₀. Method for determining the velocity vector of the main the SC includes: measurement in the PPRTS due to the correlation processing of radio signals of the frequency difference value Δf_k between the emitted and received test radio signal of the PPRTS after its retransmission by the main SC, measurement in the PPRTS due to the correlation processing of radio signals of the frequency difference values Δf_H between the emitted and received test radio signal of the IORC after its retransmission by the main SC, measurement in the PPRTS due to the correlation processing of radio signals of the frequency difference values between the emitted and received test radio signal of the IORC after its retransmission by the main SC, measurement in the PPRTS due to correlation processing of radio signals of the values of the nominal frequencies of the received radio signals of n-x ZS after their retransmission to the main and adjacent spacecraft, respectively, and calculation of the orthogonal components of the velocity vector of the main spacecraft based on the measured frequency shifts of the radio signals of the system.

EFFECT: technical result is an increase in the accuracy of determining the orthogonal components of the spacecraft velocity vector.

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