A Survey of Radars Capable of Providing Small Debris Measurements for Orbit Prediction

This paper reviews the basic radar requirements for tracking small debris (1 to 10 cm). Based on results of the NASA ORDERACS experiment the frequency and sensitivity of five current world-wide radars collecting debris data are reviewed. An analysis of the tracking errors of these radars is provided. Based on their range, velocity, and angle track errors and search capability, the Russian Don-2D and the US FPS-85 are identified as the most likely radars to contribute un-cued search and track data to a Space Debris Surveillance Network. The ability of all the radars to provide orbital period data on small debris is assessed. The current criteria to catalog space objects are reviewed in light of NASA Measurements and Modeling of the small debris spatial density. A summary of current radar capability to support a Debris Surveillance Network is provided and recommendations made for future track data experimentation and data exchanges.