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Published in:
2024 | OriginalPaper | Chapter
12. Computational Guidance Method for Mars Entry
Authors : Shuang Li, Xu Liu, Xiu-qiang Jiang, Yu-ming Peng
Published in: Trajectory Optimization and Guidance Methods for Mars Entry
Publisher: Springer Nature Singapore
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Abstract
In this chapter, the pseudospectral discretization and modified objective function with penalty terms are used to develop a new P-QCQP entry tracking guidance algorithm to fundamentally reduce the scale of the problem, improve the computational efficiency, and smoothen the control profile based on the original U-QCQP algorithm. Compared with the existing LQR and ETPC algorithms, the QCQP-based method is less sensitive to the initial state error, atmospheric density perturbation, and aerodynamic coefficient bias because it takes path constraints into account. The results demonstrate the potential of the improved P-QCQP algorithm for real-time onboard applications.