Abstract
AbstractAn approach guidance method based on onboard trajectory planning is proposed for the rendezvous of non-cooperative targets with terminal position and velocity constraints. Firstly, a convex optimization problem for the rendezvous trajectory is established and discretized. To simplify the gravity model in the convex optimization, a reference gravity sequence is generated by solving a sequence convex optimization problem, and stored for onboard utilization. Then, according to the thrust characteristics of the spacecraft, a two-stage guidance strategy based on trajectory planning is developed. In the first stage, the rendezvous trajectory is solved through a fuel consumption minimization problem with the terminal position and velocity constraints. In the second stage, the rendezvous trajectory is generated by minimizing the terminal position error and considering the terminal velocity as a constraint. The switching strategy of the two guidance stages is also given. Finally, the proposed approach guidance method is simulated for rendezvous missions of non-cooperative targets. The results show that the planning algorithm has good computational performance, and the guidance method is applicable to the rendezvous of maneuvering targets.KeywordsNon-cooperative targetApproach guidanceTrajectory planningConvex optimization
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.