Observation debris RCS with the tristatic radar

We report results from the tristatic measurements of the space debris on May 25 2010, from 8UT to 23UT. A 15 hour measurement was run by using the 930MHZ(UHF) European Incoherent Scatter(EISCAT) radar system, which consist of three 32-meters antenna, recorded raw sample data used the standard EISACT receiver, and the transmission sample signal with Match Function(MF) analysis needed from simulation based on the constant experiment code. The resulting debris is clearly visible in the measurement, the detection threshold was set to ENR=40 in tristatic radar at the same time, and 14 events were obtained. The resulting debris are compared to a simulated observation produced with the debris orbit prediction model of National Astronomical Observatories, Chinese Academy of Sciences(CAS). The resulted showed that the absolute mean errors of 14 events in distance is 0.72km. The RCS measurements are found to have some extents with the debris value from U.S. Space Surveillance Network(SSN), although only a single measurement was made.