Identifying the limitations of current orbital solutions in Space Situational Awareness

As part of my PhD I am working on improving orbit solutions for space traffic management operations using a number of techniques. The first step in this process has been identifying the limitations of current orbital solutions in Space Situational Awareness. This has involved analyzing the accuracy of the current state-of-the-art in both uncooperative and cooperative SSA. The results of this analysis are presented in the paper “On the Limits of Current Practices in Uncooperative Space Surveillance: Analysis of Mega-Constellation Data Time-Series” which I will present at the 2023 AMOS conference.

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.
”