New Hight Accuracy Determination of Range and Range Rate of Satellites from EISCAT Radar Data Taken During 2010 SSA CO-VI Campaign

We have developed further the methods used in EISCAT for analysing radar measurements of space debris, and have re-analysed part of the satellite data taken in 2010 during SSA CO-VI campaign. The updated analysis makes Bayesian estimates of range and range rate, and includes proper error analysis which was largely missing in the earlier work. The new analysis achieves centimetres per second statistical accuracy in range rate by determining the maximum of the the continuous-! periodogram, and achieves a few tens of centimetres statistical accuracy in range by utilising the detailed shape of the receiver impulse response. Systematic errors remain to be fixed, but even as it is, the new analysis improves the accuracy of the range and range rate estimates between one and two orders of magnitude.