Development of mathematical apparatus of radiointerferometric complex synthesis

DOI №______

Abstract

One of the important tasks in the development of the trajectory radio-interferometric system is the determination of the method of trajectory measurements of space vehicles (SV), which is considered in this article. The paper considers the development of a system of trajectory measurements to improve the accuracy of forecasting orbital trajectory parameters of spacecraft motion and improve the quality of ballistic-navigation support. The basis of such a system should be the measurements obtained by a two-element groundspace radiointerferometer, which consists of a ground-based radio-technical control complex (GBRTC) and an on-board radio-technical complex of spacecraft that will be placed in a geostationary orbit. It is proposed to obtain information on the current orbital-orbital data of the spacecraft position by measuring the crocheting function of the satellite radio signal and estimating its main parameters necessary for solving the navigation problem. It is proposed to carry out spacecraft trajectory measurements using reference space sources, whose astronomical location is known. The geometrical interpretation of the proposed method is a double difference in the propagation time of radio signals from a low-orbit spacecraft, a reference spacecraft and a space source (SS) in receiving devices of a groundbased radio-technical control complex. Thus, in this method of trajectory measurements, differential observations of a space vehicle on a background of space source at a close angular distance are used, and the differences in the frequencies of interference and group delays are measured. Also, it is possible to obtain orbit information about the spacecraft by any radio signals emitted by the spacecraft.

Keywords: spacecraft; ground-based radio-technical control complex; method of trajectory measurements; radiointerferometer with extra-long base.

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