А.М. Karachevcev - Chief Expert, JSC «RPC «NIIDAR». E-mail: nik@niidar.ru О.N. Koroshchupov - Ph.D. (Eng.), Professor, JSC «RPC «NIIDAR». E-mail: scientist@niidar.ru

In the article the actual scientific and practical issue of need to increase accuracy of coordinate-time measurements, observed in the near-Earth space artificial satellites, rockets and other objects is considered. Also, in the material outlined principles of the solution of considered task with the usage of radar stations with decimeter, centimeter and optical ranges of electromagnetic waves. In the article considered the core of the algorithm of the high-precision trajectory mea-surements and issues of its practical realization in the Military Space Forces resources. Accuracy of trajectory measurements is considered to be one of the main problems of modern radiolocation. Measurement accuracy of units of arc seconds is desired during angular coordinates determination and units of centimeters during space objects ranging. Solution of this problem is largely dependent on how accurate the impact of atmospheric and astrophysical factors on trajectory mea-surements is taken into account. Results of conducted research in the field of astrorefractometry made it possible to improve calculation accuracy of correction for the impact of atmospheric radio waves refraction. This achievement was made due to use of refraction correction calculation algorithm. This algorithm employs usage of multilayer at-mosphere model closest to real one in the region of radar location. This model is acquired just before trajectory measurements session. The basic positions of method increasing of an exactitude of calculations of the compensating corrections, realizable in practice, to a time of coordinate measurements of artificial Earth satellite. The possibility of angular coordinates measurement with desired accuracy not less than tens of arc seconds in centimeter band were proved by the results of practical trajectory measurements. Perspectives of further increase of operation accuracy and efficiency special radar complex are shown.

 

1. Kolosov M.A., Armand N.A., JAkovlev O.I. Rasprostranenie radiovoln pri kosmicheskojj svjazi. M.: Svjaz. 1969.
2. Kolosov M.A., SHabelnikov A.V. Refrakcija ehlektromagnitnykh voln v atmosferakh Zemli, Venery i Marsa. M.: Sov. radio. 1976.
3. Karachevcev A.M., Orel T.I., Sorokin V.A. Ob osnovnykh osobennostjakh i rezultatakh rascheta popravok na atmosfernuju refrakciju radiovoln pri provedenii vysokotochnykh radiolokacionnykh izmerenijj po dalnosti v okolozemnom prostranstve // Sb. dokl. X Mezhdunar. nauch.-tekhn. konf. «Radiolokacija, navigacija, svjaz». Voronezh: NPF OOO «Sakvoee». 2004. T. 3. S. 1547-1558.
4. Karachevcev A.M.Osobennosti kompensacii vlijanija atmosfernojj refrakcii v vysokotochnykh radioopticheskikh kompleksakh nabljudenija za kosmicheskimi obektami // Sb. dokl. XII Mezhdunar. nauch.-tekhn. konf. «Radiolokacija, navigacija, svjaz». Voronezh: NPF OOO «Sakvoee». 2006. T. 3. S. 1890-1898.