Propagation errors analysis of TLE data

Details Propagation errors analysis of TLE data Propagation errors analysis of TLE data

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009adspr..43.1065w&link_type=abstract

Advances in Space Research, Volume 43, Issue 7, p. 1065-1069.

Physics

1

Scientific paper

Orbit position uncertainty is an important factor for collision avoidance issues. For a single object with high frequency historical data, we can attain its position uncertainty easily. But sometimes data is not enough for errors analysis, orbits need to be classified. In this paper error analysis is made from two-line element sets data (TLEs). The Simplified General Perturbations-4 (SGP4) propagator was used. Statistical errors of debris and R/B are given for lower-altitude orbits which are classified by perigee altitude and eccentricity. The errors results and analysis for SSO (the Sun synchronous orbit) typical orbits are obtained. At last atmospheric drag as a main cause of downrange errors in lower-altitude orbit is analyzed. BSTAR in TLEs is modified to improve prediction precision.

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