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Russian Academy of Sciences
Central Astronomical Observatory at Pulkovo

SIXTH US/RUSSIAN
SPACE SURVEILLANCE WORKSHOP

August 22-26, 2005

Proceedings
Edited by P. Kenneth Seidelmann and Victor K. Abalakin

St. Petersburg, 2005


THE RESULTS OF THE OBSERVATIONS OF THE LEO SPACECRAFTS AT THE EXPERIMENTAL HIGH - POTENTIONAL INCOHERENT SCATTERED RADAR

A.V. Medvedev, A.P. Potekhin, A.V. Zavorin, V.P. Lebedev, V.V. Khakhinov, D.S. Kushnarev

Institute 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 radars 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 Mz 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.

8 2006.

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