Systems Engineering and Electronics ›› 2020, Vol. 42 ›› Issue (2): 427-433.doi: 10.3969/j.issn.1001-506X.2020.02.23

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Improved method of orbit analytical solution and its application

Zhitao YANG1,2,3(), Jing LIU1,3(), Lin LIU3,4,5()   

  1. 1. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
    2. School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China
    3. Space Debris Observation and Data Application Center, China National Space Administration, Beijing 100012, China
    4. School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China
    5. Institute of Space Environment and Astronautics, Nanjing University, Nanjing 210093, China
  • Received:2019-08-30 Online:2020-02-01 Published:2020-01-23
  • Supported by:
    国家自然科学基金(11803052);空间碎片研究专项资助课题(KJSP2016010101);空间碎片研究专项资助课题(KJSP2016020201);空间碎片研究专项资助课题(KJSP2016020301);空间碎片研究专项资助课题(KJSP2016020101)

Abstract:

This paper mainly introduces an improved orbital analysis solution method which can optimize the computational efficiency through improving the expression of various types of orbital perturbation terms. The low-Earth orbit is taken as an example to illustrate the improved algorithm of the orbital analysis solution, and the effectiveness and practicability are analyzed and verified through numerical simulation. The first class of nonsingular orbital elements is used as the state vector, the secular-terms, long-periodic- terms and short-periodic -terms of perturbations are calculated with Keplerian elements firstly, then the corresponding perturbation terms of the first class of nonsingular orbital elements are calculated by a certain combination form. The algorithm achieves the aim of improving computational efficiency while maintaining analytical solution accuracy and eliminating the small eccentricity singularity. The simulation results show that the model accuracy of the analytical solution algorithm is in the order of 1E-5, which accords with the theoretical expectation of the first-order analytical solution's accuracy. At the same time, the orbit prediction speed of the analytical solution algorithm can reach four times of the calculation speed of the traditional analytical solution algorithm, which can effectively improve the computational efficiency of space debris orbit prediction. Thus, the algorithm has strong engineering application values.

Key words: orbit prediction, space debris cataloging, Kepler elements, analytical solution, computational efficiency

CLC Number: 

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