| Title |
Re-Entry Trajectory Prediction Considering Skip Maneuver Characteristics |
| Authors |
정선교(Seon-Gyo Jeong) ; 강지훈(Jihoon Kang) ; 한광희(Kwang-Hee Han) ; 조관필(Kwanphil Cho) ; 나원상(Won-Sang Ra) |
| DOI |
https://doi.org/10.5370/KIEE.2025.74.4.666 |
| Keywords |
Maneuvering reentry vehicle; target tracking filter; maneuver detection; lift-to-drag ratio; skip trajectory prediction |
| Abstract |
This paper proposes a precise skip trajectory prediction algorithm of a maneuvering reentry vehicle(MaRV). It is well known that most MaRVs tend to fly the skip trajectory while maintaining a certain lift-to-drag ratio to ensure the aerodynamic efficiency. This fact motivates us to derive a closed-form solution of the skip trajectory which expressed in terms of the lift-to-drag estimate. It shows that although the magnitude of the MaRV’s flight path angle are the same when it enters and exits the atmosphere, their signs are opposite. Exploiting this analysis result and the lift-to-drag estimates, we can efficiently make a long term prediction of the skip trajectory. Unlike existing methods, the proposed method does not require the establishment of a database of aerodynamic properties of MaRVs and reduces the computational burden of numerical integration, which is very suitable for practical applications.
Through simulations on typical MaRV trajectory scenarios, it is verified that the proposed method provides superior skip trajectory prediction performance compared to existing schemes. |