Orbit error characteristic and distribution of TLE using CHAMP orbit data
Space object orbital covariance data is required for collision risk assessments, but publicly accessible two line element (TLE) data does not provide orbital error information. This paper compared historical TLE data and GPS precision ephemerides of CHAMP to assess TLE orbit accuracy from 2002 to 20...
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| Veröffentlicht in: | Astrophysics and space science 2018-02, Vol.363 (2), p.1-6, Article 31 |
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| creator | Xu, Xiao-li Xiong, Yong-qing |
| description | Space object orbital covariance data is required for collision risk assessments, but publicly accessible two line element (TLE) data does not provide orbital error information. This paper compared historical TLE data and GPS precision ephemerides of CHAMP to assess TLE orbit accuracy from 2002 to 2008, inclusive. TLE error spatial variations with longitude and latitude were calculated to analyze error characteristics and distribution. The results indicate that TLE orbit data are systematically biased from the limited SGP4 model. The biases can reach the level of kilometers, and the sign and magnitude are correlate significantly with longitude. |
| doi_str_mv | 10.1007/s10509-018-3251-z |
| format | Article |
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| language | eng |
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| subjects | Astrobiology Astronomy Astrophysics Astrophysics and Astroparticles Collisions Cosmology Covariance Ephemerides Error analysis Longitude Observations and Techniques Original Article Physics Physics and Astronomy Risk assessment Space Exploration and Astronautics Space Sciences (including Extraterrestrial Physics |
| title | Orbit error characteristic and distribution of TLE using CHAMP orbit data |
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