A.Y. Fedorinov1, V.V. Perlyuk2

1,2 Saint Petersburg State University of Aerospace Instrumentation (St. Petersburg, Russia)

1 fedorinov.aleksey@mail.ru, 2 perlvv@mail.ru

A modern solution to navigation problems using satellite systems is impossible without time synchronization on satellite boards. Time synchronization for satellites in an orbital group is important both for providing cluster management capabilities and for solving the problems of autonomous microsatellite operation. Existing time synchronization methods are not suitable for grouping microsatellites, as they require too much "manual" control and take up too many resources from ground-based control systems. With the rapid development of satellite navigation technology, high-precision time synchronization technology is becoming a bottleneck in the application of space science and technology when satellites are moving at high speed. Of great importance is the study of motion delay correction in time synchronization technology, which can not only improve the accuracy and reliability of the satellite navigation system, but also ensure time consistency between different types of satellites and improve the efficiency of satellite navigation technologies. The feasibility of the POLA motion delay correction algorithm is confirmed by measurement data between satellites. The results show that the method not only takes into account the speed of movement of one side, but also integrates information about the location of both sides in the process of implementing time-synchronized motion delay correction and achieves accurate motion delay correction. Compared with the traditional method, the significant advantage of this method is that it can rely on the speed information of one side with higher accuracy to perform motion delay correction, and even if the speed information of the other side has low accuracy, the accuracy of the correction can be guaranteed, which is especially suitable for the case of lower accuracy the speeds of the other side.

Fedorinov A.Y.,Perlyuk V.V. Investigation of algorithms for correcting spacecraft motion delay during time synchronization. Information-measuring and Control Systems. 2025. V. 23. № 4. P. 57−63. DOI: https://doi.org/10.18127/j20700814-202504-07 (in Russian)

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