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THE RESULTS OF THE OBSERVATIONS OF THE LEO SPACECRAFTS AT THE EXPERIMENTAL HIGH - POTENTIONAL INCOHERENT SCATTERED RADARA.V. Medvedev, A.P. Potekhin, A.V. Zavorin, V.P. Lebedev, V.V. Khakhinov, D.S. KushnarevInstitute of Solar-Terrestrial Physics (ISTP), Sibirian branch of Russian Academy of Sciene,
Irkutsk, p.b. 4026, Russia 664033 In order to expand the set of an spacecrafts characteristics and increase its identification
reliability we carry out simultaneous coordinated observations of LEO spacecrafts by radio
and astrophysical observation techniques. The optical observations are published in various
articles. In the present report measurements of artificial satellites at low orbits and
measurements of characteristics of space environment near them with the help of high-
potentional, incoherent scattering radar (HP-ISR) will be discussed.
The radar is a high potential, monostatic, pulsed, frequency scan radar unit. The HP-ISR
is located near 120 km to the north-west of the city of Irkutsk and operated by the ISTP SB
RAS. The IS Radar provides the greatest information content in investigations of the upper
atmosphere, as it permits measurements of several plasma parameters to be made virtually
throughout its thickness (150-1000 km) simultaneously. The radar’s potential is sufficient for
detection and determination of the parameters of motion of existing spacecraft and large
debris.
The principal technical data of the IS radar are presented. The measurements of LEO
spacecrafts tracking at frequencies about 150 MÍz had been carried. The results of
observations geodesic at SC “EGP” are presented. We produce the mathematical model for
radar signal from SC “EGP”, which allows us solving the problems of determining parameters
of proper rotation and spatial orientation of the spacecrafts.
Ðàçìåùåí 8 äåêàáðÿ 2006.
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