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http://dx.doi.org/10.5139/JKSAS.2017.45.10.881

New TLE generation method based on the past TLEs  

Cho, Dong-Hyun (Korea Aerospace Research Institute)
Han, Sang-Hyuck (Korea Aerospace Research Institute)
Kim, Hae-Dong (Korea Aerospace Research Institute)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.45, no.10, 2017 , pp. 881-891 More about this Journal
Abstract
In this paper, we described the new TLE(Two Line Elements) generation method based on the compansation technique by using past TLEs(Two Line Elements) released by JSpOC(Joint Space Operation Center) in USA to reduce the orbit prediction error for long duration of SGP4(Simplified General Perturbations 4) which is a simplifed and analytical orbit propagator. The orbital residuals the orbital difference between two ephemeris for the first TLE only and for the all TLEs updated by JSpOC for the past some period was applied for this algorithm instead of general orbit determination software. Actually, in these orbital residuals, the trend of orbit prediction error from SGP4 is included. Thus, it is possible to make a simple residual function from these orbital residulas by using the fitting process. By using these residual functions with SGP4 prediction data for the currnet TLE data, the compansated orbit prediction can be reconstructed and the orbit prediction error for long duration of SGP4 is also reduced. And it is possible to generate new TLE data from it. In this paper, we demonstraed this algorithm in simple simulation, and the orbital error is decreased dramatically from 4km for the SGP4 propagation to 2km for it during 7 days as a result.
Keywords
Orbit Propagation; TLE(TLE); SGP4(SGP4); Compensation Method;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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