Parametric Characterization of SGP4 Theory and TLE Positional Accuracy
Id: 260
Type: Conference paper
Published: 09/11/2014
Event: AMOS SSA Conference 2014
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Abstract:
To gain better insight into the practical limits of applicability for TLEs, SGP4 and the underlying GP theory, the native SGP4 accuracy is parametrically examined for the statistically-significant range of RSO orbit inclinations experienced as a function of all orbit altitudes from LEO through GEO disposal altitude. For each orbit altitude, reference or “truth” orbits were generated using full force modeling, time-varying space weather, and AGI’s HPOP numerical integration orbit propagator. Then, TLEs were optimally fit to these truth orbits. The resulting TLEs were then propagated and positionally differenced with the truth orbits to determine how well the GP theory was able to fit the truth orbits. Resultant statistics characterizing these empirically-derived accuracies are provided.
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Citation:
Oltrogge, D.L. and Ramrath, J., “Parametric Characterization of SGP4 Theory and TLE Positional Accuracy,” AMOS 2014, Maui HI, 11 September 2014, accessible at https://comspoc.com/Resources/Content/Private/C-20220424T080117/Paper/20140911_EGP_Fit_Capability_AMOS_3317135_v04.pdf.
