Real-Time Retargeting Using Controllability Boundary for Chandrayaan-3 Lunar Landing
This paper presents the real-time retargeting guidance policy developed for the Chandrayaan-3 lunar landing mission. The baseline guidance generates approximate fuel-optimal descent trajectories, while a high-level policy enables safe retargeting to alternate sites when the nominal site becomes infeasible. The retargeting strategy leverages a convex representation of the controllability boundary, allowing rapid feasibility checks and real-time target updates. To the best of the authors knowledge, this represents the first application of a data-driven retargeting framework in an operational lunar landing mission. Pre-flight simulations and Chandrayaan-3 flight results validate the effectiv...
| Authors | Suraj Kumar, Debjyoti Chakrabarti, Aditya Rallapalli et al. |
|---|---|
| Primary category | eess.SY |
| Published | 28 May 2026 |
| Last updated at source | 28 May 2026 |
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