Current Limits of Space Situational Awareness

This research area focuses on the challenges and limitations of current orbit solutions in SSA, with a particular emphasis on uncooperative orbits.

Key results and analysis are presented in the paper “On the Limits of Current Practices in Uncooperative Space Surveillance: Analysis of Mega-Constellation Data Time-Series” (AMOS 2023).

Time evolution of positional discrepancy between NORAD TLEs, Supplemental TLEs (Celestrak), and Operator Ephemeris Data (GNSS). The horizontal dotted lines represent a new TLE updating the state vector that is being propagated using SGP4.