Time-to-Go

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

The remaining time required for the spacecraft to fly from its current state to the terminal state, a key parameter in explicit guidance laws. For time-optimal control problems, time-to-go is obtained analytically from the terminal condition of the Hamiltonian via a quartic equation, and its accuracy directly affects the correctness of guidance commands.

Application Value

This concept has important application value in cislunar space research and mission design.

References

  • 赵弘骞等 - 2021 - 基于动态规划的月面定点着陆快速制导方法
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Contributors: ouyangjiahong, Ou Yang Jiahong