| Autor: |
Hyeonjeong Yim, Dae-Won Chung, Ok-Chul Jung |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Journal of the Korean Society for Aeronautical & Space Sciences. 42:270-278 |
| ISSN: |
1225-1348 |
| DOI: |
10.5139/jksas.2014.42.3.270 |
| Popis: |
This paper describes an improvement of space objects orbit prediction. To screen possible collisions between operational satellites and space objects, the TLE (Two-Line Element) was used as pseudo-measurement and than the orbit determination and orbit prediction were performed through the flight dynamics system. For determining the orbits, the state vectors were assumed by a series of TLEs within a certain period. The propagation error was analyzed according to the fitting period and a number of pseudo-observations. In order to find out the improvement of orbit prediction with the proposed method, KOMPSAT-2, 3 having the precise orbit in the meter-level range were first applied. Then the result applied to space objects under the same conditions was analyzed. As a result of the RMS error comparison with the orbit prediction of space object, the precision of orbit prediction was improved by approximately 90% for seven days prediction. The improved orbit prediction of space objects can be utilized in the daily analysis for initial screening of the close space objects at high risk. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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