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- Title
The J2 Relative Perturbation Analysis of Satellite Formation under the Requirement of Relative Position Maintenance with Millimeter-Level Accuracy.
- Authors
Wang, Jingji; Liu, Chunyang
- Abstract
With high-precision DEM (Digital Elevation Model) and GMTI (Ground Moving Target Indicator) as the demand background, the influence of J 2 zonal harmonic term perturbation on the relative motion of the millimeter-level short-range leader-follower satellites in near-circular orbit is studied through the relative perturbation method. An equation of motion that can describe the motion of the leader-follower satellites under the influence of J 2 perturbation in near-circular orbit is derived, and the characteristics of the trajectory of in-plane periodic motion are analyzed. A study shows that under the influence of the relative perturbation of the J 2 term, the in-plane periodic motion of the leader-follower satellites in near-circular orbit is a symmetrical closed "drop-shaped" trajectory with a period of 2 π / n. By comparing with the results of numerical simulations, the correctness of the conclusions obtained in this paper is verified. According to the research results, it can be known that only using a thruster as the actuator to maintain the relative position can no longer meet the requirements of the long-term mm-level relative position maintenance. In the future, a new technical approach needs to be explored to achieve the long-term relative position maintenance with millimeter-level control accuracy.
- Subjects
MOVING target indicator radar; PERIODIC motion; DIGITAL elevation models; RELATIVE motion; EQUATIONS of motion
- Publication
International Journal of Aerospace Engineering, 2021, p1
- ISSN
1687-5966
- Publication type
Article
- DOI
10.1155/2021/6687468